CVE-2026-117503: medium-severity vulnerability in a2aproject a2a-go
a2aproject a2a-go REST SSE handler rest.go resource consumption
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.7%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X
Affected products
a2aproject · a2a-goRelated CVEs — a2aproject a2a-go
In the same product, most dangerous first.
References
https://github.com/a2aproject/a2a-go/https://github.com/a2aproject/a2a-go/commit/ff6035bd21e44bb3ee1bfa547885b8c08327fa01https://github.com/a2aproject/a2a-go/pull/396https://github.com/a2aproject/a2a-go/releases/tag/v2.5.0https://vuldb.com/cve/CVE-2026-117503https://vuldb.com/submit/1015052https://vuldb.com/vuln/427070https://vuldb.com/vuln/427070/cti