{"id":"CVE-2026-117503","aliases":[],"title":"a2aproject a2a-go REST SSE handler rest.go resource consumption","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.","severity":"medium","score":6.9,"published":"2026-10-27T13:45:17.953Z","modified":"2026-10-27T13:45:17.953Z","withdrawn":false,"knownExploited":false,"affected":[],"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/"],"sources":[{"name":"CVE","id":"CVE-2026-117503","modified":"2026-10-27T13:45:17.953Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-117503"}],"assessments":[{"source":"CNA","vector":"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","score":6.9},{"source":"CNA","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C","score":5.3},{"source":"CNA","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C","score":5.3},{"source":"CNA","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:OF/RC:C","score":5}]}