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CERTFR-2026-AVI-1039
Vulnerability from certfr_avis
De multiples vulnérabilités ont été découvertes dans Zabbix. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une atteinte à la confidentialité des données et une atteinte à l'intégrité des données.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Zabbix versions 7.4.x ant\u00e9rieures \u00e0 7.4.13",
"product": {
"name": "Zabbix",
"vendor": {
"name": "Zabbix",
"scada": false
}
}
},
{
"description": "Zabbix versions 7.x ant\u00e9rieures \u00e0 7.0.29",
"product": {
"name": "Zabbix",
"vendor": {
"name": "Zabbix",
"scada": false
}
}
},
{
"description": "Zabbix versions 6.x ant\u00e9rieures \u00e0 6.0.48",
"product": {
"name": "Zabbix",
"vendor": {
"name": "Zabbix",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-59781",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-59781"
},
{
"name": "CVE-2026-23934",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23934"
},
{
"name": "CVE-2026-1199",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-1199"
},
{
"name": "CVE-2026-23922",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23922"
},
{
"name": "CVE-2026-23930",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23930"
},
{
"name": "CVE-2026-23931",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23931"
},
{
"name": "CVE-2026-23935",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23935"
},
{
"name": "CVE-2026-23937",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23937"
},
{
"name": "CVE-2026-23938",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23938"
},
{
"name": "CVE-2026-23933",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23933"
},
{
"name": "CVE-2026-23929",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-23929"
}
],
"initial_release_date": "2026-08-18T00:00:00",
"last_revision_date": "2026-08-18T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1039",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-08-18T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Injection de code indirecte \u00e0 distance (XSS)"
},
{
"description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Zabbix. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer un d\u00e9ni de service \u00e0 distance, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Zabbix",
"vendor_advisories": [
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28077",
"url": "https://support.zabbix.com/browse/ZBX-28077"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28070",
"url": "https://support.zabbix.com/browse/ZBX-28070"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28068",
"url": "https://support.zabbix.com/browse/ZBX-28068"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28069",
"url": "https://support.zabbix.com/browse/ZBX-28069"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28067",
"url": "https://support.zabbix.com/browse/ZBX-28067"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28074",
"url": "https://support.zabbix.com/browse/ZBX-28074"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28071",
"url": "https://support.zabbix.com/browse/ZBX-28071"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28073",
"url": "https://support.zabbix.com/browse/ZBX-28073"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28072",
"url": "https://support.zabbix.com/browse/ZBX-28072"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28075",
"url": "https://support.zabbix.com/browse/ZBX-28075"
},
{
"published_at": "2026-08-18",
"title": "Bulletin de s\u00e9curit\u00e9 Zabbix ZBX-28076",
"url": "https://support.zabbix.com/browse/ZBX-28076"
}
]
}
CVE-2026-23922 (GCVE-0-2026-23922)
Vulnerability from cvelistv5
Published
2026-08-18 12:13
Modified
2026-08-18 16:02
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-522 - Insufficiently Protected Credentials
Summary
The email media OAuth field 'Client secret' cannot be read after saving, but a Super Admin can leak it by setting a malicious 'Token endpoint'. Changes were made to reset the client secret upon changing the token endpoint.
References
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CVE-2026-23933 (GCVE-0-2026-23933)
Vulnerability from cvelistv5
Published
2026-08-18 12:18
Modified
2026-08-19 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-259 - Use of Hard-coded Password
Summary
In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.
References
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CVE-2026-23930 (GCVE-0-2026-23930)
Vulnerability from cvelistv5
Published
2026-08-18 12:17
Modified
2026-08-18 13:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Summary
An unauthenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend popup.testtriggerexpr action, leading to potential denial of service.
References
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CVE-2026-23931 (GCVE-0-2026-23931)
Vulnerability from cvelistv5
Published
2026-08-18 12:17
Modified
2026-08-18 13:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-203 - Observable Discrepancy
Summary
The frontend validatate.api.exists action can be exploited by authenticated users to extract plaintext user macro values leading to potential loss of confidentiality.
References
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CVE-2026-23929 (GCVE-0-2026-23929)
Vulnerability from cvelistv5
Published
2026-08-18 12:16
Modified
2026-08-19 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ("Prototype Pollution")
Summary
Prototype pollution vulnerability in searchParamsToObject() is leading to a persistent XSS in Maps. URL parameter processing was not filtering dangerous properties like __proto__, combined with jQuery's unsafe element creation that traversed the prototype chain.
References
Impacted products
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CVE-2026-23938 (GCVE-0-2026-23938)
Vulnerability from cvelistv5
Published
2026-08-18 12:20
Modified
2026-08-18 13:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-248 - Uncaught Exception
Summary
An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service.
References
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CVE-2026-1199 (GCVE-0-2026-1199)
Vulnerability from cvelistv5
Published
2026-08-18 12:15
Modified
2026-08-18 13:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Summary
Zabbix API and Frontend login lockout mechanism has a flaw where several unsuccessful login requests are not properly counted towards the block counter if sent simultaneously, potentially allowing for more password guesses than intended.
References
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CVE-2026-23934 (GCVE-0-2026-23934)
Vulnerability from cvelistv5
Published
2026-08-18 12:18
Modified
2026-08-18 13:35
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-405 - Asymmetric Resource Consumption (Amplification)
Summary
An authenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend validate.api.exists action, leading to potential denial of service.
References
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CVE-2026-23937 (GCVE-0-2026-23937)
Vulnerability from cvelistv5
Published
2026-08-18 12:20
Modified
2026-08-18 13:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-203 - Observable Discrepancy
Summary
The Zabbix API host.get action can be exploited by authenticated users to extract a host's PSK key leading to potential loss of data integrity.
References
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CVE-2026-23935 (GCVE-0-2026-23935)
Vulnerability from cvelistv5
Published
2026-08-18 12:19
Modified
2026-08-18 13:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-125 - Out-of-bounds Read
Summary
A Zabbix administrator is able to read out of bounds memory by utilizing a flaw in script item/preprocessing (JavaScript) HttpRequest logic, leading to potential confidentiality loss.
References
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CVE-2026-59781 (GCVE-0-2026-59781)
Vulnerability from cvelistv5
Published
2026-08-18 12:21
Modified
2026-08-19 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-427 - Uncontrolled Search Path Element
Summary
When Zabbix Agent was installed on Windows into a custom installation directory, the installer did not verify whether the selected directory had secure access permissions. If the target directory allowed unauthorized users to modify its contents, an attacker could place a malicious DLL that could later be loaded by the application, resulting in DLL sideloading. The installer has been hardened to detect potentially unsafe installation directories and now requires explicit user confirmation before proceeding with installation in such locations. This reduces the risk of accidental installation into directories with inappropriate permissions while preserving compatibility with existing deployment scenarios.
References
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"at": "7.4.13",
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"dateUpdated": "2026-08-19T03:55:56.294Z",
"state": "PUBLISHED"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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