Denial of Service due to unbounded HPACK/QPACK prefixed-integer decoding
Summary
Denial of Service due to unbounded HPACK/QPACK prefixed-integer decoding. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:47231 with package rabbitmq-server4-3-main-4.3.4-0.2.hum1, rabbitmq-server4-2-main-4.2.9-0.2.hum1.
What this means
In plain English
Denial of Service due to unbounded HPACK/QPACK prefixed-integer decoding. Red Hat rates this important (CVSS 7.5). Weakness: CWE-770. Red Hat lists fixing advisory RHSA-2026:47231 with package rabbitmq-server4-3-main-4.3.4-0.2.hum1, rabbitmq-server4-2-main-4.2.9-0.2.hum1. Successful exploitation can interrupt the affected service or exhaust resources, reducing availability until the component recovers.
Recommended action
Primary action: update to a vendor-listed fixed release: rabbitmq-server4-3-main-4.3.4-0.2.hum1, rabbitmq-server4-2-main-4.2.9-0.2.hum1, RHSA-2026:47231.
Rewritten locally from the scraped official advisory data above; no generative API is used. The vendor advisory is authoritative.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
- rabbitmq-server4-3-main-4.3.4-0.2.hum1
- rabbitmq-server4-2-main-4.2.9-0.2.hum1
- RHSA-2026:47231
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
Mitigation
Upgrade to a fixed release: rabbitmq-server4-3-main-4.3.4-0.2.hum1, rabbitmq-server4-2-main-4.2.9-0.2.hum1, RHSA-2026:47231. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 3 hours ago·verify at source
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