CVE-2026-117503medium6.9
a2aproject a2a-go REST SSE handler rest.go resource consumption
The advisory, in context
A vulnerability was determined in a2aproject a2a-go up to 2.4.0. Impacted is an unknown function of the file a2asrv/rest.go of the component REST SSE handler. This manipulation causes resource consumption. It is possible to initiate the attack remotely. Upgrading to version 2.5.0 is recommended to address this issue. Patch name: ff6035bd21e44bb3ee1bfa547885b8c08327fa01. It is recommended to upgrade the affected component.
Affected packages
This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
References
- https://vuldb.com/vuln/427070
- https://vuldb.com/vuln/427070/cti
- https://vuldb.com/cve/CVE-2026-117503
- https://vuldb.com/submit/1015052
- https://github.com/a2aproject/a2a-go/pull/396
- https://github.com/a2aproject/a2a-go/commit/ff6035bd21e44bb3ee1bfa547885b8c08327fa01
- https://github.com/a2aproject/a2a-go/releases/tag/v2.5.0
- https://github.com/a2aproject/a2a-go/