GHSA-MR34-9552-QR95
Vulnerability from github – Published: 2026-04-17 22:33 – Updated: 2026-04-17 22:33Summary
Webchat 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.
Impact
A 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.
Affected versions
- Affected:
>= 2026.4.7, < 2026.4.15 - Patched:
2026.4.15
Fix
OpenClaw 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.
Verified in v2026.4.15:
src/gateway/server-methods/chat-webchat-media.tsuses safe file-URL parsing, rejects Windows network paths, and callsassertLocalMediaAllowedbefore probing local audio files.src/media/web-media.tsrejects remote-hostfile://URLs, Windows network paths, and local-root bypasses on the shared media path.src/gateway/server-methods/chat-webchat-media.test.tscovers both remote-hostfile://rejection and local-root denial before filesystem access.
Fix commits included in v2026.4.15 and absent from v2026.4.14:
1470de5d3e0970856d86cd99336bb8ada3fe87davia PR #672936e58f1f9f54bca1fea1268ec0ee4c01a2af03ddevia PR #6729852ef42302ead9e183e6c8810e0a04ee4ef8ae9fcvia PR #67303 as defense-in-depth for trusted media passthrough anchoring
Thanks to @Kherrisan for reporting this issue.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "openclaw"
},
"ranges": [
{
"events": [
{
"introduced": "2026.4.7"
},
{
"fixed": "2026.4.15"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [],
"database_specific": {
"cwe_ids": [
"CWE-22",
"CWE-73"
],
"github_reviewed": true,
"github_reviewed_at": "2026-04-17T22:33:09Z",
"nvd_published_at": null,
"severity": "HIGH"
},
"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.",
"id": "GHSA-mr34-9552-qr95",
"modified": "2026-04-17T22:33:09Z",
"published": "2026-04-17T22:33:09Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-mr34-9552-qr95"
},
{
"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"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
"type": "CVSS_V4"
}
],
"summary": "OpenClaw: Webchat media embedding enforces local-root containment for tool-result files"
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.