[UPDATE] [medium] RabbitMQ: Multiple Vulnerabilities

mediumCVE-2026-44839 CVE-2026-44838

An attacker can exploit multiple vulnerabilities in RabbitMQ to conduct a cross-site scripting attack and to bypass security measures.

CSIRTS triage

vendor: RabbitMQ product: RabbitMQ Cross-site scripting Authentication bypass

What: Multiple vulnerabilities allow an attacker to conduct cross-site scripting attacks and bypass security measures.
Who is affected: Deployments of RabbitMQ are affected by these vulnerabilities.
Urgency: Remediation is medium urgency due to the potential for exploitation, though it is not currently being actively exploited.
Action: Update to the latest version of RabbitMQ to address these vulnerabilities.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-07-31
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1397

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-448390.18% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 8% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-448380.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-44839	coverage & exploitation status	NVD · CVE.org
CVE-2026-44838	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownCVE-2026-44839: RabbitMQ: Unsanitized vhost names allow for XSS in management UImsrc

Recent advisories for RabbitMQ

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownUSN-8724-1: rabbitmq-c vulnerabilitiesubuntu · 2026-09-03
mediumCVE-2026-59272: Any application shipping logs to RabbitMQ over TLS via the Log4j2 appender, relying on the doc…nvd · 2026-08-27
mediumCVE-2026-59271: When the RabbitMQ management aliveness check fails, the configured admin password is embedded …nvd · 2026-08-27
unknownCVE-2026-9133 - Arbitrary file read in rabbitmq-aws pluginaws · 2026-08-20
medium[NEW] [medium] RabbitMQ Java Client: Multiple vulnerabilitiescert-bund · 2026-08-19
unknownCVE-2026-69220: The RabbitMQ Java client library allows Java and JVM-based applications to connect to and inte…nvd · 2026-08-18