{"action":"Upgrade github.com/argoproj/argo-workflows/v4 to 4.0.5 or later.","affected":[{"fixed":"4.0.5","introduced":"4.0.0"}],"component":"github.com/argoproj/argo-workflows/v4","cve_ids":["CVE-2026-42294"],"ecosystem":"Go","epss":0.00599,"exploited":false,"fixed_versions":["4.0.5"],"ghsa_id":"GHSA-jcc8-g2q4-9fxq","id":"tcs_01M5KFDZCW5008YX6YYN0P96X4","modified_at":"2026-07-21T15:00:42.331188913Z","published_at":"2026-05-04T20:11:01Z","references":["https://osv.dev/vulnerability/GHSA-jcc8-g2q4-9fxq","https://github.com/argoproj/argo-workflows/security/advisories/GHSA-jcc8-g2q4-9fxq","https://nvd.nist.gov/vuln/detail/CVE-2026-42294","https://github.com/argoproj/argo-workflows/commit/7abb4de6c3599e2d5d960ba4d5de4cf1df109965","https://access.redhat.com/security/cve/CVE-2026-42294","https://bugzilla.redhat.com/show_bug.cgi?id=2468443","https://github.com/argoproj/argo-workflows","https://github.com/argoproj/argo-workflows/releases/tag/v3.7.14","https://github.com/argoproj/argo-workflows/releases/tag/v4.0.5","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42294.json"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-jcc8-g2q4-9fxq#Go/github.com/argoproj/argo-workflows/v4","url":"https://osv.dev/vulnerability/GHSA-jcc8-g2q4-9fxq"}],"summary":"Argo Vulnerable to Unauthenticated Memory Exhaustion (DoS) in Webhook Interceptor"}