← CVE Intelligence

CVE-2026-67227

RabbitMQ: Atom exhaustion: to_atom on global-parameter :name PUBLISHED

Description (CNA)

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1, Atom exhaustion: toatom on global-parameter :name. resourceexists/2 (and the PUT/DELETE handlers) call rabbitdatacoercion:toatom/1 on the :name URL path segment. toatom/1 uses binarytoatom/2 (unsafe). The endpoint requires policymaker (not management, but below A user with the policymaker tag can crash the node by exhausting the atom table via repeated requests to /api/global-parameters/:name with unique :name Management plugin enabled policymaker tag ~1M HTTP. This issue is fixed in versions 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1.

Affected (CNA)

Vendor / productVersions
rabbitmq / rabbitmq-serveraffected >= 4.0.0, < 4.0.22; affected >= 4.1.0, < 4.1.14; affected >= 4.2.0, < 4.2.7; affected >= 4.3.0, < 4.3.1

CWE

CWE-400

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.