CVE-2026-67230

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (38th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the Web STOMP WebSocket handler enforced neither max_frame_size nor login_timeout before authentication, allowing an unauthenticated client to keep a connection alive with a slow stream of small frames and accumulate unbounded pre-authentication state. The rabbitmq_web_stomp plugin must be enabled, and no authentication is required to reach the vulnerable path. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.

CVSS v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
44
EG Risk 44/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
38th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 25, 2026

Last Modified

September 29, 2026

Advisory Details (5)

Auto-updated Sep 25, 2026
Patch available. Sources: github_release, github, github_commit.
github_release Patch Available

RabbitMQ 4.2.6

Patch available: rabbitmq/rabbitmq-server v4.2.6

https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
github_commit

commit c1000ba89052 (rabbitmq/rabbitmq-server)

Fix landed in rabbitmq/rabbitmq-server commit c1000ba89052 — awaiting tagged release

https://github.com/rabbitmq/rabbitmq-server/commit/c1000ba89052608c01c052d98016403ba6e92222
github_commit

commit 8138edae6d2b (rabbitmq/rabbitmq-server)

Fix landed in rabbitmq/rabbitmq-server commit 8138edae6d2b — awaiting tagged release

https://github.com/rabbitmq/rabbitmq-server/commit/8138edae6d2beaafe699a41a754d17420bdc2068
github_commit

commit 0b4080fa5d6f (rabbitmq/rabbitmq-server)

Fix landed in rabbitmq/rabbitmq-server commit 0b4080fa5d6f — awaiting tagged release

https://github.com/rabbitmq/rabbitmq-server/commit/0b4080fa5d6f797b6331d0ce1db2b4bacd34560e
github Patch Available

Web-STOMP unbounded pre-auth accumulation · Advisory · rabbitmq/rabbitmq-server · GitHub

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v63-j4gm-p4rh

Vendor Advisories for CVE-2026-67230(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rabbitmq-server3.10.8-1.1 ... 4.3.2-5 (28 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rabbitmq-server4.0.5-10 ... 4.3.2-5 (18 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rabbitmq-server4.0.5-10 ... 4.3.0-1 (9 versions)
  • every version up to 4.3.0-2: fixed in 4.3.0-2
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-05 09:12 UTCEG score recompute
  2. 2026-10-05 09:12 UTCVendor advisory
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 11:05 UTCEG score recompute
  5. 2026-10-04 11:05 UTCVendor advisory
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-03 13:04 UTCEG score recompute
  8. 2026-10-03 13:04 UTCVendor advisory
  9. 2026-10-02 17:56 UTCEPSS rescore
  10. 2026-10-02 15:03 UTCEG score recompute
  11. 2026-10-02 15:03 UTCVendor advisory
  12. 2026-10-01 19:50 UTCEPSS rescore
  13. 2026-09-30 18:48 UTCEG score recompute
  14. 2026-09-30 15:03 UTCEPSS rescore
  15. 2026-09-29 20:31 UTCEG score recompute
  16. 2026-09-29 19:38 UTCEG score recompute
  17. 2026-09-29 12:46 UTCEG score recompute
  18. 2026-09-28 14:45 UTCEG score recompute
  19. 2026-09-28 13:52 UTCEPSS rescore
  20. 2026-09-28 11:45 UTCEG score recompute
  21. 2026-09-27 13:48 UTCEPSS rescore
  22. 2026-09-27 13:44 UTCEG score recompute
  23. 2026-09-26 15:59 UTCEPSS rescore
  24. 2026-09-25 17:41 UTCEG score recompute
  25. 2026-09-25 16:24 UTCEG score recompute
Show 1 more
  1. 2026-09-25 16:24 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-67230?
CVE-2026-67230 is a medium vulnerability published on September 25, 2026. RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the Web STOMP WebSocket handler enforced neither maxframesize nor logintimeout before authentication, allowing an unauthenticated client to keep a connection alive with a slow stream of small frames…
When was CVE-2026-67230 disclosed?
CVE-2026-67230 was first published on September 25, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67230 actively exploited?
CVE-2026-67230 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (38th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-67230?
CVE-2026-67230 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-67230?
A fix for CVE-2026-67230 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-67230 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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