Common Weakness Enumeration
CWE-204
AllowedObservable Response Discrepancy
Abstraction: Base · Status: Incomplete
The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.
203 vulnerabilities reference this CWE, most recent first.
CVE-2026-71458 (GCVE-0-2026-71458)
Vulnerability from cvelistv5 – Published: 2026-09-23 18:07 – Updated: 2026-11-07 05:01
VLAI
EPSS
VEX
Title
Automation-controller: automation-controller-container: automation-controller: named-url 404 body oracle enables cross-tenant resource name enumeration
Summary
URLModificationMiddleware resolves named-URL lookups
against unfiltered Model.objects before RBAC. The 403→404
shim only rewrites 403 responses, leaving the pk=0 miss
path with a different 404 detail string. Differential
"Not found." vs "No <Model> matches..." reveals whether
a named resource (org, credential, inventory, host) exists
anywhere on the platform. Enables cross-tenant internal
hostname enumeration.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 19:11 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
redhat
CNA
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:71113 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:71114 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:71177 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:71179 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-71458 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2512367 | issue-trackingx_refsource_REDHAT |
Impacted products
5 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
Unaffected:
0:4.6.33-1.el8ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
Unaffected:
0:4.6.33-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
Unaffected:
0:4.7.17-1.el9ap , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el10 cpe:/a:redhat:ansible_automation_platform:2.6::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
Unaffected:
1789673739 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.7 |
Unaffected:
1789580684 , < *
(rpm)
cpe:/a:redhat:ansible_automation_platform:2.7::el9 |
Date Public
2026-09-06 00:00
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CVE-2026-69519 (GCVE-0-2026-69519)
Vulnerability from cvelistv5 – Published: 2026-08-20 21:43 – Updated: 2026-10-30 17:19 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Azure Stack HCI Information Disclosure Vulnerability
Summary
Observable response discrepancy in Azure Stack HCI allows an unauthorized attacker to disclose information over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 12:42 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
microsoft
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Azure Stack HCI |
Affected:
-
cpe:2.3:a:microsoft:azure_stack_hci:*:*:*:*:*:*:*:* |
Date Public
2026-08-20 14:00
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CVE-2026-66002 (GCVE-0-2026-66002)
Vulnerability from cvelistv5 – Published: 2026-08-20 18:29 – Updated: 2026-08-21 21:46
VLAI
EPSS
VEX
Title
Frappe: User Enumeration via PDDR
Summary
Frappe is a full-stack web application framework. Prior to 15.115.0 and 16.27.0, the public request-data web form and PersonalDataDownloadRequest class in frappe/website/doctype/personal_data_download_request/personal_data_download_request.py return distinguishable response shapes for registered and unregistered email addresses, including the user_name field and persistence behavior. A remote attacker can compare the responses to enumerate registered users. This issue is fixed in versions 15.115.0 and 16.27.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 21:09 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
GitHub_M
CNA
References
9 references
| URL | Tags |
|---|---|
| https://github.com/frappe/frappe/security/advisor… | x_refsource_CONFIRM |
| https://github.com/frappe/frappe/pull/40787 | x_refsource_MISC |
| https://github.com/frappe/frappe/pull/40814 | x_refsource_MISC |
| https://github.com/frappe/frappe/pull/40815 | x_refsource_MISC |
| https://github.com/frappe/frappe/commit/30fe0b411… | x_refsource_MISC |
| https://github.com/frappe/frappe/commit/47a396ec5… | x_refsource_MISC |
| https://github.com/frappe/frappe/commit/4b32a4e00… | x_refsource_MISC |
| https://github.com/frappe/frappe/releases/tag/v15.115.0 | x_refsource_MISC |
| https://github.com/frappe/frappe/releases/tag/v16.27.0 | x_refsource_MISC |
Impacted products
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CVE-2026-61503 (GCVE-0-2026-61503)
Vulnerability from cvelistv5 – Published: 2026-07-13 17:23 – Updated: 2026-10-01 15:20 X_Open Source
VLAI
EPSS
VEX
Title
Rejetto HFS < 3.2.1 Username Enumeration via Login Response Differences
Summary
Rejetto HFS 3.0.0 through 3.2.0 returns observably different responses from its login endpoint depending on whether the submitted username exists. A remote unauthenticated attacker can use this to confirm valid account names, including the default admin account, facilitating password-guessing and session-forgery attacks.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 19:07 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/rejetto/hfs/releases/tag/v3.2.1 | release-notespatch |
| https://www.vulncheck.com/advisories/rejetto-hfs-… | third-party-advisory |
Impacted products
Date Public
2026-07-13 00:00
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CVE-2026-60007 (GCVE-0-2026-60007)
Vulnerability from cvelistv5 – Published: 2026-08-04 11:55 – Updated: 2026-08-04 15:02
VLAI
EPSS
VEX
Summary
In Eclipse Milo versions 0.6.0 through 1.1.4, username-token processing returns distinguishable errors for invalid RSA PKCS#1 v1.5 padding and other authentication failures, allowing an on-path attacker who captures a victim's `Basic128Rsa15`-encrypted username token to use repeated unauthenticated `ActivateSession` requests as a padding oracle, recover the victim's password, and authenticate with the recovered credentials.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 14:19 UTC
CWE
Assigner
eclipse
CNA
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse Milo |
Affected:
0.6.0 , ≤ 1.1.4
(semver)
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CVE-2026-59785 (GCVE-0-2026-59785)
Vulnerability from cvelistv5 – Published: 2026-10-05 10:28 – Updated: 2026-10-05 11:43
VLAI
EPSS
VEX
Title
Hidden host credentials inferable via multiselect.get filtering
Summary
Host search in Frontend allows filtering by fields that are not displayed, including stored IPMI and PSK credentials. A user with read access can guess a credential and see from the search result whether the guess was right, letting them uncover it.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 11:41 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
Zabbix
CNA
References
1 reference
Impacted products
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CVE-2026-55998 (GCVE-0-2026-55998)
Vulnerability from cvelistv5 – Published: 2026-08-05 07:51 – Updated: 2026-08-05 13:13
VLAI
EPSS
VEX
Title
Cluster Existence Oracle via Unauthenticated Import Endpoint
Summary
The endpoint /v3/import/{token}_{clusterId}.yaml retrieves the cluster object before validating the token. When a valid cluster ID references a cluster that has private registry secrets configured, a nil pointer dereference in pkg/systemtemplate/private_registry.go causes the request to return HTTP 502 Bad Gateway. For cluster IDs that do not exist, the endpoint returns HTTP 200. This observable difference in response codes constitutes a reliable enumeration oracle.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 13:11 UTC
CWE
- CWE-204 - Observable response discrepancy
Assigner
suse
CNA
References
Impacted products
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CVE-2026-54768 (GCVE-0-2026-54768)
Vulnerability from cvelistv5 – Published: 2026-07-31 22:24 – Updated: 2026-08-03 20:36
VLAI
EPSS
VEX
Title
WPGraphQL has deprecated `user` field on SendPasswordResetEmailPayload that leaks user existence + profile (defeats explicit anti-enumeration design)
Summary
WPGraphQL provides a GraphQL API for WordPress sites. From 2.0.0 until 2.15.1, the deprecated user field on SendPasswordResetEmailPayload lets an unauthenticated caller distinguish existing author-class accounts through the sendPasswordResetEmail mutation and obtain public profile fields. This issue is fixed in version 2.15.1.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-03 20:36 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
GitHub_M
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/wp-graphql/wp-graphql/security… | x_refsource_CONFIRM |
| https://github.com/wp-graphql/wp-graphql/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| wp-graphql | wp-graphql |
Affected:
< 2.15.1
|
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CVE-2026-54739 (GCVE-0-2026-54739)
Vulnerability from cvelistv5 – Published: 2026-08-19 20:16 – Updated: 2026-08-21 21:48
VLAI
EPSS
VEX
Title
Lemmy: Login Endpoint User Enumeration via HTTP Response Code Differential
Summary
Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-beta.1, Lemmy's login endpoint in crates/api/api/src/local_user/login.rs returns different errors depending on whether the username_or_email value exists. LocalUserView::find_by_email_or_name propagates a NotFound response for an unknown account, while an existing account with a wrong password returns LemmyErrorType::IncorrectLogin. This observable response discrepancy, including HTTP 404 for a nonexistent account and HTTP 400 for an incorrect password on an existing account, allows an unauthenticated attacker to confirm registered usernames or email addresses and use the results for targeted credential attacks or social engineering. This issue is fixed in versions 0.19.19 and 1.0.0-beta.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 21:09 UTC
CWE
- CWE-204 - Observable Response Discrepancy
Assigner
GitHub_M
CNA
References
8 references
| URL | Tags |
|---|---|
| https://github.com/LemmyNet/lemmy/security/adviso… | x_refsource_CONFIRM |
| https://github.com/LemmyNet/lemmy/pull/6531 | x_refsource_MISC |
| https://github.com/LemmyNet/lemmy/pull/6535 | x_refsource_MISC |
| https://github.com/LemmyNet/lemmy/commit/4d235a1b… | x_refsource_MISC |
| https://github.com/LemmyNet/lemmy/commit/59e968a5… | x_refsource_MISC |
| https://github.com/LemmyNet/lemmy/releases/tag/0.19.19 | x_refsource_MISC |
| https://github.com/LemmyNet/lemmy/releases/tag/1.… | x_refsource_MISC |
| https://join-lemmy.org/news/2026-06-09_-_Lemmy_Re… | x_refsource_MISC |
Impacted products
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CVE-2026-54445 (GCVE-0-2026-54445)
Vulnerability from cvelistv5 – Published: 2026-06-17 22:14 – Updated: 2026-06-18 15:49
VLAI
EPSS
VEX
Title
Vantage6: Set admin user and password from environment or configuration
Summary
vantage6 is an open-source infrastructure for privacy preserving analysis. Versions prior to 5.0.0 provide an initial user with username `root` and password `root`. This is not ideal because attackers know that almost all vantage6 servers have a user with username `root` that probably has admin rights, and the initial password is very weak and it is possible that administrators forget to reset it. Version 5.0.0 fixes the issue. As a workaround, it is possible to delete the `root` user after it has been used to create other users.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 15:49 UTC
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/vantage6/vantage6/security/adv… | x_refsource_CONFIRM |
| https://github.com/vantage6/vantage6/issues/1932 | x_refsource_MISC |
| https://github.com/vantage6/vantage6/blob/main/do… | x_refsource_MISC |
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"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-54445",
"datePublished": "2026-06-17T22:14:51.461Z",
"dateReserved": "2026-06-15T15:30:40.317Z",
"dateUpdated": "2026-06-18T15:49:54.097Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-46
Architecture and Design
Strategy: Separation of Privilege
- Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation MIT-39
Implementation
- Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
- If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
- Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-331: ICMP IP Total Length Field Probe
An adversary sends a UDP packet to a closed port on the target machine to solicit an IP Header's total length field value within the echoed 'Port Unreachable" error message. This type of behavior is useful for building a signature-base of operating system responses, particularly when error messages contain other types of information that is useful identifying specific operating system responses.
CAPEC-332: ICMP IP 'ID' Field Error Message Probe
An adversary sends a UDP datagram having an assigned value to its internet identification field (ID) to a closed port on a target to observe the manner in which this bit is echoed back in the ICMP error message. This allows the attacker to construct a fingerprint of specific OS behaviors.
CAPEC-541: Application Fingerprinting
An adversary engages in fingerprinting activities to determine the type or version of an application installed on a remote target.
CAPEC-580: System Footprinting
An adversary engages in active probing and exploration activities to determine security information about a remote target system. Often times adversaries will rely on remote applications that can be probed for system configurations.