All vulnerabilities
CVE-2026-117503

a2aproject a2a-go REST SSE handler rest.go resource consumption

a2aproject a2a-go
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published27 Oct 2026Updated 27 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 6

  • a2a-goaffected: 2.0CVE List
  • a2a-goaffected: 2.1CVE List
  • a2a-goaffected: 2.2CVE List
  • a2a-goaffected: 2.3CVE List
  • a2a-goaffected: 2.4.0CVE List
  • a2a-gounaffected: 2.5.0CVE List

References 8