{"id":"CVE-2026-63004","state":"PUBLISHED","title":"Unleash: Addon webhook URL is dialed server-side with no internal-address filtering, enabling SSRF to internal services / cloud metadata and exfiltration of configured request headers","description":"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.","publishedAt":"2026-08-21T18:05:20.458Z","updatedAt":"2026-08-21T19:22:22.158Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Unleash unleash"],"affected":[{"vendor":"Unleash","product":"unleash","versions":[{"version":"< 7.5.2","status":"affected"},{"version":">= 7.6.0, < 7.6.5","status":"affected"},{"version":">= 8.0.0, < 8.0.2","status":"affected"}]}],"references":["https://github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj","https://github.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf17a9c2b741a1","https://github.com/Unleash/unleash/commit/d45f99df924c0d24747b3e45e46fcda7dcd3c1c1","https://github.com/Unleash/unleash/commit/d862562a5ab8f2d1e40f6519c64cf0b4fdaf806d","https://github.com/Unleash/unleash/releases/tag/v7.5.2","https://github.com/Unleash/unleash/releases/tag/v7.6.5","https://github.com/Unleash/unleash/releases/tag/v8.0.2"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/63xxx/CVE-2026-63004.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-63004","state":"PUBLISHED","datePublished":"2026-08-21T18:05:20.458Z","dateUpdated":"2026-08-21T19:22:22.158Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-14T23:10:57.032Z"},"containers":{"cna":{"title":"Unleash: Addon webhook URL is dialed server-side with no internal-address filtering, enabling SSRF to internal services / cloud metadata and exfiltration of configured request headers","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Unleash","product":"unleash","versions":[{"version":"< 7.5.2","status":"affected"},{"version":">= 7.6.0, < 7.6.5","status":"affected"},{"version":">= 8.0.0, < 8.0.2","status":"affected"}]}],"references":[{"url":"https://github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj","name":"https://github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf17a9c2b741a1","name":"https://github.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf17a9c2b741a1","tags":["x_refsource_MISC"]},{"url":"https://github.com/Unleash/unleash/commit/d45f99df924c0d24747b3e45e46fcda7dcd3c1c1","name":"https://github.com/Unleash/unleash/commit/d45f99df924c0d24747b3e45e46fcda7dcd3c1c1","tags":["x_refsource_MISC"]},{"url":"https://github.com/Unleash/unleash/commit/d862562a5ab8f2d1e40f6519c64cf0b4fdaf806d","name":"https://github.com/Unleash/unleash/commit/d862562a5ab8f2d1e40f6519c64cf0b4fdaf806d","tags":["x_refsource_MISC"]},{"url":"https://github.com/Unleash/unleash/releases/tag/v7.5.2","name":"https://github.com/Unleash/unleash/releases/tag/v7.5.2","tags":["x_refsource_MISC"]},{"url":"https://github.com/Unleash/unleash/releases/tag/v7.6.5","name":"https://github.com/Unleash/unleash/releases/tag/v7.6.5","tags":["x_refsource_MISC"]},{"url":"https://github.com/Unleash/unleash/releases/tag/v8.0.2","name":"https://github.com/Unleash/unleash/releases/tag/v8.0.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-21T18:05:20.458Z"},"source":{"advisory":"GHSA-5vf6-jrqr-78fj","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-21T19:22:12.627244Z","id":"CVE-2026-63004","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-21T19:22:22.158Z"}}]}}}