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31 vulnerabilities found for by PowerDNS
CVE-2026-27854 (GCVE-0-2026-27854)
Vulnerability from cvelistv5
Published
2026-03-31 12:06
Modified
2026-04-02 13:46
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Use After Free
Summary
An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.
References
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CVE-2026-27853 (GCVE-0-2026-27853)
Vulnerability from cvelistv5
Published
2026-03-31 12:04
Modified
2026-03-31 13:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Out-of-bounds Write
Summary
An attacker might be able to trigger an out-of-bounds write by sending crafted DNS responses to a DNSdist using the DNSQuestion:changeName or DNSResponse:changeName methods in custom Lua code. In some cases the rewritten packet might become larger than the initial response and even exceed 65535 bytes, potentially leading to a crash resulting in denial of service.
References
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CVE-2026-24030 (GCVE-0-2026-24030)
Vulnerability from cvelistv5
Published
2026-03-31 12:01
Modified
2026-03-31 13:14
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Uncontrolled Memory Allocation
Summary
An attacker might be able to trick DNSdist into allocating too much memory while processing DNS over QUIC or DNS over HTTP/3 payloads, resulting in a denial of service. In setups with a large quantity of memory available this usually results in an exception and the QUIC connection is properly closed, but in some cases the system might enter an out-of-memory state instead and terminate the process.
References
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CVE-2026-24029 (GCVE-0-2026-24029)
Vulnerability from cvelistv5
Published
2026-03-31 11:59
Modified
2026-03-31 13:15
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Incorrect Authorization
Summary
When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL.
References
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CVE-2026-24028 (GCVE-0-2026-24028)
Vulnerability from cvelistv5
Published
2026-03-31 11:57
Modified
2026-03-31 13:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Buffer Over-read
Summary
An attacker might be able to trigger an out-of-bounds read by sending a crafted DNS response packet, when custom Lua code uses newDNSPacketOverlay to parse DNS packets. The out-of-bounds read might trigger a crash, leading to a denial of service, or access unrelated memory, leading to potential information disclosure.
References
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CVE-2026-0397 (GCVE-0-2026-0397)
Vulnerability from cvelistv5
Published
2026-03-31 11:53
Modified
2026-03-31 13:20
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Overly Permissive Cross-domain Whitelist
Summary
When the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator logged to the dashboard into visiting a malicious website and extract information about the running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-Origin Resource Sharing (CORS) policy.
References
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CVE-2026-0396 (GCVE-0-2026-0396)
Vulnerability from cvelistv5
Published
2026-03-31 11:50
Modified
2026-03-31 13:21
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Summary
An attacker might be able to inject HTML content into the internal web dashboard by sending crafted DNS queries to a DNSdist instance where domain-based dynamic rules have been enabled via either DynBlockRulesGroup:setSuffixMatchRule or DynBlockRulesGroup:setSuffixMatchRuleFFI.
References
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CVE-2025-59024 (GCVE-0-2025-59024)
Vulnerability from cvelistv5
Published
2026-02-09 14:44
Modified
2026-02-09 16:14
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Insufficient Verification of Data Authenticity
Summary
Crafted delegations or IP fragments can poison cached delegations in Recursor.
References
Impacted products
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CVE-2025-59023 (GCVE-0-2025-59023)
Vulnerability from cvelistv5
Published
2026-02-09 14:44
Modified
2026-02-09 16:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Insufficient Verification of Data Authenticity
Summary
Crafted delegations or IP fragments can poison cached delegations in Recursor.
References
Impacted products
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CVE-2026-24027 (GCVE-0-2026-24027)
Vulnerability from cvelistv5
Published
2026-02-09 14:25
Modified
2026-02-09 16:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Insufficient Control of Network Message Volume (Network Amplification)
Summary
Crafted zones can lead to increased incoming network traffic.
References
Impacted products
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CVE-2026-0398 (GCVE-0-2026-0398)
Vulnerability from cvelistv5
Published
2026-02-09 14:20
Modified
2026-02-09 15:37
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Allocation of Resources Without Limits or Throttling
Summary
Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor.
References
Impacted products
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CVE-2025-59029 (GCVE-0-2025-59029)
Vulnerability from cvelistv5
Published
2025-12-09 09:16
Modified
2025-12-09 14:29
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-617 - Reachable Assertion
Summary
An attacker can trigger an assertion failure by requesting crafted DNS records, waiting for them to be inserted into the records cache, then send a query with qtype set to ANY.
References
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CVE-2025-59030 (GCVE-0-2025-59030)
Vulnerability from cvelistv5
Published
2025-12-09 09:15
Modified
2025-12-09 14:30
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-276 - Incorrect Default Permissions
Summary
An attacker can trigger the removal of cached records by sending a NOTIFY query over TCP.
References
Impacted products
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CVE-2025-30187 (GCVE-0-2025-30187)
Vulnerability from cvelistv5
Published
2025-09-18 09:21
Modified
2025-11-04 21:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Summary
In some circumstances, when DNSdist is configured to use the nghttp2 library to process incoming DNS over HTTPS queries, an attacker might be able to cause a denial of service by crafting a DoH exchange that triggers an unbounded I/O read loop, causing an unexpected consumption of CPU resources.
References
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CVE-2025-30192 (GCVE-0-2025-30192)
Vulnerability from cvelistv5
Published
2025-07-21 12:49
Modified
2025-07-21 13:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-345 - Insufficient Verification of Data Authenticity
Summary
An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries.
The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers.
The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.
References
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CVE-2025-30193 (GCVE-0-2025-30193)
Vulnerability from cvelistv5
Published
2025-05-20 11:17
Modified
2025-05-20 13:16
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-674 - Uncontrolled Recursion
Summary
In some circumstances, when DNSdist is configured to allow an unlimited number of queries on a single, incoming TCP connection from a client, an attacker can cause a denial of service by crafting a TCP exchange that triggers an exhaustion of the stack and a crash of DNSdist, causing a denial of service.
The remedy is: upgrade to the patched 1.9.10 version.
A workaround is to restrict the maximum number of queries on incoming TCP connections to a safe value, like 50, via the setMaxTCPQueriesPerConnection setting.
We would like to thank Renaud Allard for bringing this issue to our attention.
References
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CVE-2025-30194 (GCVE-0-2025-30194)
Vulnerability from cvelistv5
Published
2025-04-29 11:25
Modified
2025-06-20 15:42
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - User After Free
Summary
When DNSdist is configured to provide DoH via the nghttp2 provider, an attacker can cause a denial of service by crafting a DoH exchange that triggers an illegal memory access (double-free) and crash of DNSdist, causing a denial of service.
The remedy is: upgrade to the patched 1.9.9 version.
A workaround is to temporarily switch to the h2o provider until DNSdist has been upgraded to a fixed version.
We would like to thank Charles Howes for bringing this issue to our attention.
References
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CVE-2025-30195 (GCVE-0-2025-30195)
Vulnerability from cvelistv5
Published
2025-04-07 13:24
Modified
2025-04-07 16:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-476 - NULL Pointer Dereference
Summary
An attacker can publish a zone containing specific Resource Record Sets. Processing and caching results for these sets can lead to an illegal memory accesses and crash of the Recursor, causing a denial of service.
The remedy is: upgrade to the patched 5.2.1 version.
We would like to thank Volodymyr Ilyin for bringing this issue to our attention.
References
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CVE-2024-25590 (GCVE-0-2024-25590)
Vulnerability from cvelistv5
Published
2024-10-03 15:29
Modified
2024-10-03 18:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
An attacker can publish a zone containing specific Resource Record Sets.
Repeatedly processing and caching results for these sets can lead to a
denial of service.
References
Impacted products
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CVE-2024-25581 (GCVE-0-2024-25581)
Vulnerability from cvelistv5
Published
2024-05-13 11:49
Modified
2025-02-13 17:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
When incoming DNS over HTTPS support is enabled using the nghttp2 provider, and queries are routed to a tcp-only or DNS over TLS backend, an attacker can trigger an assertion failure in DNSdist by sending a request for a zone transfer (AXFR or IXFR) over DNS over HTTPS, causing the process to stop and thus leading to a Denial of Service. DNS over HTTPS is not enabled by default, and backends are using plain DNS (Do53) by default.
References
Impacted products
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CVE-2024-25583 (GCVE-0-2024-25583)
Vulnerability from cvelistv5
Published
2024-04-25 09:45
Modified
2025-02-13 17:40
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
A crafted response from an upstream server the recursor has been configured to forward-recurse to can cause a Denial of Service in the Recursor. The default configuration of the Recursor does not use recursive forwarding and is not affected.
References
Impacted products
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CVE-2023-26437 (GCVE-0-2023-26437)
Vulnerability from cvelistv5
Published
2023-04-04 14:37
Modified
2025-02-13 16:44
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Denial of service
Summary
Denial of service vulnerability in PowerDNS Recursor allows authoritative servers to be marked unavailable.This issue affects Recursor: through 4.6.5, through 4.7.4 , through 4.8.3.
References
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CVE-2015-5230 (GCVE-0-2015-5230)
Vulnerability from cvelistv5
Published
2020-01-15 16:32
Modified
2024-08-06 06:41
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Other
Summary
The DNS packet parsing/generation code in PowerDNS (aka pdns) Authoritative Server 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (crash) via crafted query packets.
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| PowerDNS | PowerDNS Authoritative Server |
Version: 3.4.x before 3.4.6 |
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CVE-2019-10163 (GCVE-0-2019-10163)
Vulnerability from cvelistv5
Published
2019-07-30 22:16
Modified
2024-08-04 22:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A Vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.9, 4.0.8 allowing a remote, authorized master server to cause a high CPU load or even prevent any further updates to any slave zone by sending a large number of NOTIFY messages. Note that only servers configured as slaves are affected by this issue.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
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CVE-2019-10162 (GCVE-0-2019-10162)
Vulnerability from cvelistv5
Published
2019-07-30 22:15
Modified
2024-08-04 22:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A vulnerability has been found in PowerDNS Authoritative Server before versions 4.1.10, 4.0.8 allowing an authorized user to cause the server to exit by inserting a crafted record in a MASTER type zone under their control. The issue is due to the fact that the Authoritative Server will exit when it runs into a parsing error while looking up the NS/A/AAAA records it is about to use for an outgoing notify.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
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CVE-2017-15120 (GCVE-0-2017-15120)
Vulnerability from cvelistv5
Published
2018-07-27 15:00
Modified
2024-08-05 19:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| PowerDNS | pdns-recursor |
Version: 4.0.8 |
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CVE-2017-15090 (GCVE-0-2017-15090)
Vulnerability from cvelistv5
Published
2018-01-23 15:00
Modified
2024-09-16 18:38
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
An issue has been found in the DNSSEC validation component of PowerDNS Recursor from 4.0.0 and up to and including 4.0.6, where the signatures might have been accepted as valid even if the signed data was not in bailiwick of the DNSKEY used to sign it. This allows an attacker in position of man-in-the-middle to alter the content of records by issuing a valid signature for the crafted records.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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CVE-2017-15091 (GCVE-0-2017-15091)
Vulnerability from cvelistv5
Published
2018-01-23 15:00
Modified
2024-08-05 19:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
An issue has been found in the API component of PowerDNS Authoritative 4.x up to and including 4.0.4 and 3.x up to and including 3.4.11, where some operations that have an impact on the state of the server are still allowed even though the API has been configured as read-only via the api-readonly keyword. This missing check allows an attacker with valid API credentials to flush the cache, trigger a zone transfer or send a NOTIFY.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| PowerDNS | PowerDNS Authoritative |
Version: 4.x up to and including 4.0.4 Version: 3.x up to and including 3.4.11 |
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CVE-2017-15092 (GCVE-0-2017-15092)
Vulnerability from cvelistv5
Published
2018-01-23 15:00
Modified
2024-09-17 03:27
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
A cross-site scripting issue has been found in the web interface of PowerDNS Recursor from 4.0.0 up to and including 4.0.6, where the qname of DNS queries was displayed without any escaping, allowing a remote attacker to inject HTML and Javascript code into the web interface, altering the content.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| PowerDNS | PowerDNS Recursor |
Version: from 4.0.0 up to and including 4.0.6 |
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CVE-2017-15093 (GCVE-0-2017-15093)
Vulnerability from cvelistv5
Published
2018-01-23 15:00
Modified
2024-09-17 00:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
When api-config-dir is set to a non-empty value, which is not the case by default, the API in PowerDNS Recursor 4.x up to and including 4.0.6 and 3.x up to and including 3.7.4 allows an authorized user to update the Recursor's ACL by adding and removing netmasks, and to configure forward zones. It was discovered that the new netmask and IP addresses of forwarded zones were not sufficiently validated, allowing an authenticated user to inject new configuration directives into the Recursor's configuration.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| PowerDNS | PowerDNS Recursor |
Version: 4.x up to and including 4.0.6 Version: 3.x up to and including 3.7.4 |
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"ID": "CVE-2017-15093",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "PowerDNS Recursor",
"version": {
"version_data": [
{
"version_value": "4.x up to and including 4.0.6"
},
{
"version_value": "3.x up to and including 3.7.4"
}
]
}
}
]
},
"vendor_name": "PowerDNS"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "When api-config-dir is set to a non-empty value, which is not the case by default, the API in PowerDNS Recursor 4.x up to and including 4.0.6 and 3.x up to and including 3.7.4 allows an authorized user to update the Recursor\u0027s ACL by adding and removing netmasks, and to configure forward zones. It was discovered that the new netmask and IP addresses of forwarded zones were not sufficiently validated, allowing an authenticated user to inject new configuration directives into the Recursor\u0027s configuration."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-20"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "101982",
"refsource": "BID",
"url": "http://www.securityfocus.com/bid/101982"
},
{
"name": "https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.html",
"refsource": "CONFIRM",
"url": "https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2017-15093",
"datePublished": "2018-01-23T15:00:00.000Z",
"dateReserved": "2017-10-08T00:00:00.000Z",
"dateUpdated": "2024-09-17T00:35:38.803Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}