Advisory details:
github_osv / GHSA-6mqc-jqh6-x8fc
| Advisory ID | github_osv/GHSA-6mqc-jqh6-x8fc |
| Aliases |
CVE-2026-35634
|
| Summary | OpenClaw: Gateway Canvas local-direct requests bypass Canvas HTTP and WebSocket authentication ## Summary Before `v2026.3.23`, Canvas and A2UI loopback requests could bypass Canvas bearer-or-capability authentication because `authorizeCanvasRequest(...)` treated `isLocalDirectRequest(...)` as an unconditional allow path. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected: `< 2026.3.23` - Fixed: `>= 2026.3.23` - Latest released tag checked: `v2026.3.23-2` (`630f1479c44f78484dfa21bb407cbe6f171dac87`) - Latest published npm version checked: `2026.3.23-2` ## Root Cause The vulnerable logic lived in `src/gateway/server/http-auth.ts`. `authorizeCanvasRequest(...)` returned `{ ok: true }` for local-direct requests before checking bearer authentication or an active node canvas capability, which meant unauthenticated loopback Canvas HTTP and WebSocket requests could succeed. ## Fix Commit(s) - `d5dc6b6573ae489bc7e5651090f4767b93537c9e` — `fix(gateway): require auth for canvas routes` ## Release Status The fix commit is contained in released tags `v2026.3.23` and `v2026.3.23-2`. The latest shipped tag and npm release both include the fix. ## Code-Level Confirmation - `src/gateway/server/http-auth.ts` no longer contains the local-direct early return in `authorizeCanvasRequest(...)`. - `src/gateway/server.canvas-auth.test.ts` adds the regression test `denies canvas HTTP/WS on loopback without bearer or capability by default`. Thanks @smaeljaish771 for reporting. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 6.2 |
| Risk | 3.1 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| CWE-287 | Improper Authentication |
| System | Score | Found at |
|---|---|---|
| cvssv4 | 6.9 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-6mqc-jqh6-x8fc/GHSA-6mqc-jqh6-x8fc.json |
| generic_textual | MODERATE |
| Reference id | Reference type | URL |
|---|---|---|
| https://github.com/openclaw/openclaw | ||
| https://github.com/openclaw/openclaw/commit/d5dc6b6573ae489bc7e5651090f4767b93537c9e | ||
| https://github.com/openclaw/openclaw/security/advisories/GHSA-6mqc-jqh6-x8fc | ||
| 630f1479c44f78484dfa21bb407cbe6f171dac87 | Other | https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87 |
| CVE-2026-35634 | https://nvd.nist.gov/vuln/detail/CVE-2026-35634 | |
| openclaw-authentication-bypass-via-local-direct-requests-in-canvas-gateway | Advisory | https://www.vulncheck.com/advisories/openclaw-authentication-bypass-via-local-direct-requests-in-canvas-gateway |
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| 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:N/T:P/P:M/B:A/M:M/D:T/2026-04-10T12:30:11Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/35xxx/CVE-2026-35634.json
Source Advisory: vulnrichment/CVE-2026-35634
[{'Exploitation': 'none'},
{'Automatable': 'no'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]