CVE-2026-67238
- Source
- https://cve.org/CVERecord?id=CVE-2026-67238
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-67238.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-67238
- Aliases
-
- BIT-rabbitmq-2026-67238
- GHSA-x96j-244m-mrr2
- Downstream
- Published
- 2026-09-23T19:58:35Z
- Modified
- 2026-10-22T10:30:29Z
- Severity
-
- 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- RabbitMQ: Atom-table exhaustion via reply-to queue name decoding
- Details
-
RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, rabbit_pid_codec:decompose_from_binary/1 parses a caller-supplied ETF-encoded binary and calls binary_to_atom(Node, utf8) on the node-name field. It is reached from rabbit_volatile_queue:pid_from_name/2, which is invoked for any queue name / routing key beginning amq.rabbitmq.reply-to.. The CandidateNodes membership check happens after the atom is created, and the surrounding try/catch cannot reclaim atoms (they are never GC'd). binary_to_existing_atom is not used. Any authenticated AMQP client can crash the entire Erlang VM (all vhosts, all connections) with ~1M cheap requests. Preconditions include Authenticated AMQP 0-9-1 connection to any vhost No per-connection rate limit low enough to make ~1M operations infeasible. This issue is fixed in versions 4.2.7 and 4.3.1.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-400" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67238.json" }- References
-
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.7
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.3.1
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67238.json
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-x96j-244m-mrr2
- https://nvd.nist.gov/vuln/detail/CVE-2026-67238
Affected packages
Git / github.com/rabbitmq/rabbitmq-server
Affected ranges
- Type
- GIT
- Repo
- https://github.com/rabbitmq/rabbitmq-server
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "4.2.0" }, { "fixed": "4.2.7" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "4.3.0" }, { "fixed": "4.3.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "original_tag": "v4.2.7", "range": [ { "fixed": "b15fd2a3e5465cb6ed403d5a774ef61b1a391b89" } ], "source": "REFERENCES_TAG" }, { "original_tag": "v4.3.1", "range": [ { "fixed": "49decca35e59d2cb774e5abd76412cee721308a5" } ], "source": "REFERENCES_TAG" } ] }