{"id":"CVE-2026-63004","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-63004","summary":"Unleash is an open-source feature management platform. Prior to 7.5.2, 7.6.5, and 8.0.2, the addon and integration subsystem passes the operator-controlled parameters.url value from…","details":"Unleash is an open-source feature management platform. Prior to 7.5.2, 7.6.5, and 8.0.2, the addon and integration subsystem passes the operator-controlled parameters.url value from src/lib/addons/webhook.ts and the Slack, Microsoft Teams, Datadog, and New Relic integrations to Addon.fetchRetry in src/lib/addons/addon.ts without restricting loopback, link-local, private, or cloud metadata addresses. An authenticated actor with the root CREATE_ADDON or UPDATE_ADDON permission can cause the server to send requests from inside its network boundary, use integration event status as a blind probing oracle, forward Authorization, customHeaders, or DD-API-KEY values to an attacker-observed host, and deliver the feature-event JSON body to internal services. This issue is fixed in versions 7.5.2, 7.6.5, and 8.0.2.","published":"2026-08-21T19:17:30.550","modified":"2026-08-21T19:17:30.550","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf17a9c2b741a1","label":"Unleash/unleash@2100db7"},"references":[{"type":"WEB","url":"https://github.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf17a9c2b741a1"},{"type":"WEB","url":"https://github.com/Unleash/unleash/commit/d45f99df924c0d24747b3e45e46fcda7dcd3c1c1"},{"type":"WEB","url":"https://github.com/Unleash/unleash/commit/d862562a5ab8f2d1e40f6519c64cf0b4fdaf806d"},{"type":"WEB","url":"https://github.com/Unleash/unleash/releases/tag/v7.5.2"},{"type":"WEB","url":"https://github.com/Unleash/unleash/releases/tag/v7.6.5"},{"type":"WEB","url":"https://github.com/Unleash/unleash/releases/tag/v8.0.2"},{"type":"WEB","url":"https://github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-21T19:17:30.550"}}