Advisory details:
github_osv / GHSA-xh72-v6v9-mwhc
| Advisory ID | github_osv/GHSA-xh72-v6v9-mwhc |
| Aliases |
CVE-2026-44109
|
| Summary | OpenClaw: Feishu webhook and card-action validation now fail closed ## Summary Feishu webhook mode accepted missing `encryptKey` configuration as valid and blank card-action callback tokens as usable lifecycle tokens. Together, those fail-open paths could allow unauthenticated webhook or card-action traffic to reach command dispatch in affected deployments. ## Impact A deployment using Feishu webhook mode without a configured `encryptKey`, or handling malformed card-action callbacks with blank callback tokens, could fail open instead of rejecting the request. Severity remains critical because affected webhook deployments expose a network-triggered path into OpenClaw command handling without the expected Feishu signature or replay protection. ## Affected versions - Affected: `< 2026.4.15` - Patched: `2026.4.15` ## Fix OpenClaw `2026.4.15` makes Feishu webhook and card-action validation fail closed. Webhook mode now refuses to start without an `encryptKey`, missing signing configuration returns invalid instead of valid, invalid signatures return `401`, and blank card-action callback tokens are rejected before dispatch. Verified in `v2026.4.15`: - `extensions/feishu/src/monitor.transport.ts` returns invalid when `encryptKey` is missing, refuses webhook mode without `encryptKey`, and rejects invalid signatures before JSON handling. - `extensions/feishu/src/card-action.ts` rejects blank callback tokens in the card-action lifecycle guard. - `extensions/feishu/src/monitor.webhook-security.test.ts` covers missing-`encryptKey` startup and transport rejection. - `extensions/feishu/src/monitor.card-action.lifecycle.test.ts` covers malformed blank-token card actions being dropped before handler dispatch. Fix commit included in `v2026.4.15` and absent from `v2026.4.14`: - `c8003f1b33ed2924be5f62131bd28742c5a41aae` via PR #66707 Thanks to @dhyabi2 for reporting this issue. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 8.8 |
| Risk | 4.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 9.8 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-xh72-v6v9-mwhc/GHSA-xh72-v6v9-mwhc.json |
| cvssv4 | 9.2 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-xh72-v6v9-mwhc/GHSA-xh72-v6v9-mwhc.json |
| generic_textual | CRITICAL |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/openclaw/openclaw | ||
| https://github.com/openclaw/openclaw/commit/c8003f1b33ed2924be5f62131bd28742c5a41aae | ||
| https://github.com/openclaw/openclaw/pull/66707 | ||
| https://github.com/openclaw/openclaw/security/advisories/GHSA-xh72-v6v9-mwhc | ||
| CVE-2026-44109 | https://nvd.nist.gov/vuln/detail/CVE-2026-44109 | |
| openclaw-authentication-bypass-in-feishu-webhook-and-card-action-validation | Advisory | https://www.vulncheck.com/advisories/openclaw-authentication-bypass-in-feishu-webhook-and-card-action-validation |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
| Attack Vector (AV) | Attack Complexity (AC) | Attack Requirements (AT) | Privileges Required (PR) | User Interaction (UI) | Vulnerable System Impact Confidentiality (VC) | Vulnerable System Impact Integrity (VI) | Vulnerable System Impact Availability (VA) | Subsequent System Impact Confidentiality (SC) | Subsequent System Impact Integrity (SI) | Subsequent System Impact Availability (SA) |
|---|---|---|---|---|---|---|---|---|---|---|
network adjacent local physical |
low high |
none present |
none low high |
none passive active |
high low none |
high low none |
high low none |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2026-05-07T12:34:48Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/44xxx/CVE-2026-44109.json
Source Advisory: vulnrichment/CVE-2026-44109
[{'Exploitation': 'none'},
{'Automatable': 'yes'},
{'Technical Impact': 'total'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]