{"action":"Upgrade openclaw to 2026.5.6 or later.","affected":[{"fixed":"2026.5.6","introduced":"0"}],"component":"openclaw","cve_ids":["CVE-2026-53837"],"ecosystem":"npm","epss":0.00319,"exploited":false,"fixed_versions":["2026.5.6"],"ghsa_id":"GHSA-gp79-m99v-gjmh","id":"tcs_01M5KFS5KNYWVCZEV4VB024985","modified_at":"2026-08-28T16:00:07.755038258Z","published_at":"2026-07-02T16:45:14Z","references":["https://osv.dev/vulnerability/GHSA-gp79-m99v-gjmh","https://github.com/openclaw/openclaw/security/advisories/GHSA-gp79-m99v-gjmh","https://nvd.nist.gov/vuln/detail/CVE-2026-53837","https://github.com/openclaw/openclaw","https://www.vulncheck.com/advisories/openclaw-missing-channel-type-validation-in-mattermost-event-handlers"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"GHSA-gp79-m99v-gjmh","url":"https://osv.dev/vulnerability/GHSA-gp79-m99v-gjmh"}],"summary":"OpenClaw: Mattermost handlers could fall open when channel type was missing"}