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RabbitMQ EUVDEUVD-2026-87154

| CVE-2026-67239 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-09-25 GitHub_M
XSS Rabbitmq Server Suse Rabbitmq
7.6
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
7.6 HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.0 HIGH

AC:H for the trusted-cert-with-chosen-DN and non-default plugin/verify_peer prerequisites; PR:N as no broker login is needed; UI:R since an operator must view the page; S:C and C:H/I:H as script runs in the admin console session.

3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SUSE
6.7 MEDIUM
AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:L

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
P
Scope
X

Lifecycle Timeline

4
POC Analysis Generated
Sep 25, 2026 - 19:26 vuln.today
Patch available
Sep 25, 2026 - 17:04 EUVD
Analysis Generated
Sep 25, 2026 - 16:52 vuln.today
CVE Published
Sep 25, 2026 - 16:13 cve.org
HIGH 7.6

DescriptionCVE.org

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18 and 4.0.23 and 4.1.14 and 4.2.9 and 4.3.3, Stored XSS via TLS peer-certificate DN in stream-management UI (sibling of V-11). lines 102/106/110 render peercertsubject / peercertissuer with raw <%= %> and no fmtstring(). RFC4514 backslash-escaping of </> is HTML-inert and bypassable (<img ... //>). Requires non-default config: a stream TLS listener with verifypeer and an attacker-obtainable trusted cert with a malicious Same as the connection.ejs finding, against operators viewing the stream-connection detail rabbitmqstream + rabbitmqstreammanagement enabled with a TLS listener using verifypeer Attacker can obtain a certificate signed by a CA the listener trusts, with attacker-chosen DN An operator views the. This issue is fixed in versions 3.13.18 and 4.0.23 and 4.1.14 and 4.2.9 and 4.3.3.

AnalysisAI

Stored cross-site scripting (XSS) in the RabbitMQ stream management UI allows an attacker who can present a trusted TLS client certificate with a crafted Distinguished Name to inject script into the certificate subject/issuer fields, which is then rendered unescaped when an operator opens the affected stream-connection detail page in the management UI. RabbitMQ 3.13.0 through 3.13.17, 4.0.x before 4.0.23, 4.1.x before 4.1.14, 4.2.x before 4.2.9, and 4.3.x before 4.3.3 are affected; fixes are released in 3.13.18, 4.0.23, 4.1.14, 4.2.9, and 4.3.3. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Vulnerability AssessmentAI

Exploitation Exploitation requires a NON-DEFAULT configuration: the rabbitmq_stream and rabbitmq_stream_management plugins must both be enabled, and a stream TLS listener must be configured with verify_peer. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment This is a genuine but LOW-priority stored XSS (CWE-79) whose high CVSS 4.0 base score (7.6) is driven by VC:H/VI:H, while the exploitation prerequisites make real-world risk modest. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Apply the vendor-released patch by upgrading to RabbitMQ 3.13.18, 4.0.23, 4.1.14, 4.2.9, or 4.3.3 as appropriate for your release series, following the advisory at https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-xm9p-57xv-vxwc and the release notes at https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9 and https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3; be aware that 4.2.9 raises the minimum Erlang/OTP version to 27.0 and nodes will fail to start on older Erlang releases. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, inventory all RabbitMQ deployments and confirm whether the stream management plugin is enabled and whether mutual-TLS client-certificate authentication is in use, since the issue only manifests under those conditions; where it is not required, disable the stream management plugin or restrict management UI access to a hardened administrative network segment. …

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Module for Server Applications 15 SP7 Not-Affected
SUSE Linux Enterprise Module for Server Applications 15 SP7 Affected
SUSE Linux Enterprise Server 15 SP7 Not-Affected
SUSE Linux Enterprise Server 15 SP7 Affected
SUSE Linux Enterprise Server 16.0 Affected

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EUVD-2026-87154 vulnerability details – vuln.today
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