{"id":"GHSA-mr34-9552-qr95","summary":"OpenClaw: Webchat media embedding enforces local-root containment for tool-result files","details":"## Summary\n\nWebchat tool-result media normalization could pass local and UNC-style file paths into the host-side media embedding path without applying the configured local-root containment policy.\n\n## Impact\n\nA crafted tool-result media reference could cause the host to attempt local file reads or Windows UNC/network path access while preparing webchat media blocks. This could disclose allowed host files or trigger network credential exposure on affected Windows deployments. Severity remains medium because exploitation depends on a tool-result media path reaching the webchat embedding path, but the sink is a host-side file read before the user sees the rendered result.\n\n## Affected versions\n\n- Affected: `\u003e= 2026.4.7, \u003c 2026.4.15`\n- Patched: `2026.4.15`\n\n## Fix\n\nOpenClaw `2026.4.15` hardens the webchat media path and the shared media resolver. Remote-host `file://` URLs and Windows network paths are rejected before filesystem access, and audio embedding now enforces configured `localRoots` containment before `stat` or read operations.\n\nVerified in `v2026.4.15`:\n\n- `src/gateway/server-methods/chat-webchat-media.ts` uses safe file-URL parsing, rejects Windows network paths, and calls `assertLocalMediaAllowed` before probing local audio files.\n- `src/media/web-media.ts` rejects remote-host `file://` URLs, Windows network paths, and local-root bypasses on the shared media path.\n- `src/gateway/server-methods/chat-webchat-media.test.ts` covers both remote-host `file://` rejection and local-root denial before filesystem access.\n\nFix commits included in `v2026.4.15` and absent from `v2026.4.14`:\n\n- `1470de5d3e0970856d86cd99336bb8ada3fe87da` via PR #67293\n- `6e58f1f9f54bca1fea1268ec0ee4c01a2af03dde` via PR #67298\n- `52ef42302ead9e183e6c8810e0a04ee4ef8ae9fc` via PR #67303 as defense-in-depth for trusted media passthrough anchoring\n\nThanks to @Kherrisan for reporting this issue.","aliases":["CVE-2026-41389"],"modified":"2026-05-08T01:41:28.957126Z","published":"2026-04-17T22:33:09Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-04-17T22:33:09Z","nvd_published_at":null,"cwe_ids":["CWE-22","CWE-73"]},"references":[{"type":"WEB","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-mr34-9552-qr95"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41389"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/pull/67293"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/pull/67298"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/pull/67303"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/1470de5d3e0970856d86cd99336bb8ada3fe87da"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/52ef42302ead9e183e6c8810e0a04ee4ef8ae9fc"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/6e58f1f9f54bca1fea1268ec0ee4c01a2af03dde"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openclaw-arbitrary-file-read-via-unvalidated-tool-result-media-paths"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2026.4.7"},{"fixed":"2026.4.15"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-mr34-9552-qr95/GHSA-mr34-9552-qr95.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N"}]}