CVE-2026-67241: rabbitmq-server · Missing Authorization
Affects rabbitmq-serverSource CVE Database V5
Not known to be exploited · CVSS 4.8 Medium : upgrade to 4.3.3 or 4.2.9 when convenient.
Data as of 8 Nov 2026, 23:24 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 36% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.3.3, 4.2.9
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 25 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.
What to do
Upgrade rabbitmq-server and rabbitmq/rabbitmq-server to 4.3.3 or 4.2.9.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| rabbitmqrabbitmq-server | Affected
| Fixed in
|
| rabbitmqrabbitmq-server | Affected
| Fixed in
|
GitHubrabbitmq/rabbitmq-serverpkg:github/rabbitmq/rabbitmq-serverOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
This vulnerability is fixed in RabbitMQ server versions 4.2.9 and 4.3.3. Users should upgrade to these or later versions to remediate the issue. No additional mitigation actions are indicated by the vendor advisory.
Description
RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, AMQP 1.0 management exchange.declare skips alternate-exchange permission check. pUT /exchanges/:name (lines 192-240) checks only configure on the declared exchange and passes XArgs straight to rabbitexchange:declare/7. It omits the checkreadpermitted(X) + checkwritepermitted(AE) that rabbitchannel.erl:2540-2548 enforces for the alternate-exchange argument on the AMQP 0-9-1 path. The same file already implements the analogous DLX check for queues (lines 708-719), confirming this is a missing-check bug rather than intentional A user with only configure on exchange X can route X's unroutable messages into an alternate exchange they have no write permission AMQP 1.0 enabled (default in RabbitMQ 4.x) Attacker has configure on at least one exchange but lacks write on the target. This issue is fixed in versions 4.2.9 and 4.3.3.
References
- github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-rg2g-289m-xhhw (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/commit/18eac8d547b4382bf830c621b20a35932dd1cfa5 (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/commit/56005e7cebffc478ef397573de24aff1167e7cda (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.9 (opens in a new tab)
- github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.3 (opens in a new tab)