{"id":"GHSA-r6xh-pqhr-v4xh","summary":"OpenClaw: MCP loopback owner context is derived from server-issued bearer tokens","details":"## Summary\nMCP loopback owner context is derived from server-issued bearer tokens.\n\n## Affected Packages / Versions\n- Package: openclaw (npm)\n- Affected versions: \u003c= 2026.4.21\n- Fixed version: 2026.4.22\n\n## Impact\nThe loopback MCP path accepted spoofable owner-context metadata from request headers, which could allow a non-owner loopback client to present itself as owner for owner-gated operations.\n\n## Fix\nThe MCP loopback runtime now issues separate owner and non-owner bearer tokens and derives senderIsOwner exclusively from which token authenticated the request. The spoofable sender-owner header is no longer emitted or trusted.\n\n## Fix Commit(s)\n- 3cb1a56bfc9579a0f2336f9cfa12a8a744332a19\n\n## Verification\n- The fix commit is contained in the public v2026.4.22 tag.\n- openclaw@2026.4.22 is published on npm and the compiled package contains the fix.\n- Focused regression coverage for this path passed before publication.\n\nOpenClaw thanks @VladimirEliTokarev for reporting.","aliases":["CVE-2026-44118"],"modified":"2026-05-12T17:26:29.030919Z","published":"2026-05-04T20:22:42Z","database_specific":{"cwe_ids":["CWE-284","CWE-290"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-05-04T20:22:42Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-r6xh-pqhr-v4xh"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44118"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/3cb1a56bfc9579a0f2336f9cfa12a8a744332a19"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openclaw-owner-context-spoofing-via-bearer-token-header"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.4.22"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-r6xh-pqhr-v4xh/GHSA-r6xh-pqhr-v4xh.json","last_known_affected_version_range":"\u003c= 2026.4.21"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}