Allocation of Resources Without Limits or Throttling in Apache bRPC - CVE-2026-61902
Published: October 23, 2026
Vulnerability identifier: #VU157344
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-61902
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service through memory exhaustion.
The vulnerability exists due to inconsistent enforcement of resource limits in Apache bRPC's non-progressive HTTP/1 and HTTP/2 parsers and memcache and couchbase response parsers when buffering message bodies. A remote attacker can send message data exceeding the configured max_body_size limit to make an affected process buffer excessive data and potentially exhaust its memory.
Affected software
Apache bRPC
How to mitigate CVE-2026-61902
Install security update from vendor's website.
Apache bRPC - update to 1.18.0