{"id":"CVE-2026-63004","title":"Unleash is an open-source feature management platform","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 src/lib/addons/webhook.ts and the Slack, Microsoft Team…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","cwe":["CWE-918"],"vendor":"unleash-server","product":"unleash-server","affected":["unleash-server < 7.5.2","unleash-server >= 7.6.0, < 7.6.5","unleash-server >= 8.0.0, < 8.0.2"],"patched":["unleash-server 7.5.2","unleash-server 7.6.5","unleash-server 8.0.2"],"published":"2026-08-21","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:20:38.860","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63004","references":[{"url":"https://github.com/Unleash/unleash/commit/2100db76af3473f13e6fb40096cf17a9c2b741a1","label":"security-advisories@github.com"},{"url":"https://github.com/Unleash/unleash/commit/d45f99df924c0d24747b3e45e46fcda7dcd3c1c1","label":"security-advisories@github.com"},{"url":"https://github.com/Unleash/unleash/commit/d862562a5ab8f2d1e40f6519c64cf0b4fdaf806d","label":"security-advisories@github.com"},{"url":"https://github.com/Unleash/unleash/releases/tag/v7.5.2","label":"security-advisories@github.com"},{"url":"https://github.com/Unleash/unleash/releases/tag/v7.6.5","label":"security-advisories@github.com"},{"url":"https://github.com/Unleash/unleash/releases/tag/v8.0.2","label":"security-advisories@github.com"},{"url":"https://github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj","label":"security-advisories@github.com"},{"url":"https://github.com/Unleash/unleash/security/advisories/GHSA-5vf6-jrqr-78fj","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/advisories/GHSA-5vf6-jrqr-78fj"}],"tags":["nvd","ghsa","npm"],"epss":0.00338,"epssPercentile":0.27315,"aliases":["GHSA-5vf6-jrqr-78fj"],"ecosystem":"npm","ingestedAt":"2026-08-21T19:21:05.369Z","slug":"CVE-2026-63004","body":"## Overview\n\nUnleash 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-63004)\n\nAffected packages:\n\n- `unleash-server < 7.5.2`\n- `unleash-server >= 7.6.0, < 7.6.5`\n- `unleash-server >= 8.0.0, < 8.0.2`\n\nPatched in:\n\n- `unleash-server 7.5.2`\n- `unleash-server 7.6.5`\n- `unleash-server 8.0.2`\n\nSource: https://github.com/advisories/GHSA-5vf6-jrqr-78fj","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}