CVE-2026-117503 a2aproject a2a-go REST SSE handler rest.go resource consumption
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-117503?
CVE-2026-117503 is a medium-severity vulnerability in a2aproject a2a-go, published on 27 Oct 2026.
Official description
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.
Which versions are affected by CVE-2026-117503?
How do I fix CVE-2026-117503?
No fix has been published for CVE-2026-117503 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-117503 being exploited?
There is no known exploitation of CVE-2026-117503 in the wild and no public exploit code.
Sources
Also known as GHSA-cpqw-hg34-p3wx.