Advisory details:
github_osv / GHSA-9jpj-g8vv-j5mf
| Advisory ID | github_osv/GHSA-9jpj-g8vv-j5mf |
| Aliases |
CVE-2026-34511
|
| Summary | OpenClaw: Gemini OAuth exposed the PKCE verifier through the OAuth state parameter ## Summary Before OpenClaw 2026.4.2, the Gemini OAuth flow reused the PKCE verifier as the OAuth `state` value. Because the provider reflected `state` back in the redirect URL, the verifier could be exposed alongside the authorization code. ## Impact Anyone who could capture the redirect URL could learn both the authorization code and the PKCE verifier, defeating PKCE's interception protection for that flow and enabling token redemption. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `<= 2026.4.1` - Patched versions: `>= 2026.4.2` - Latest published npm version: `2026.4.1` ## Fix Commit(s) - `a26f4d0f3ef0757db6c6c40277cc06a5de76c52f` — separate OAuth state from the PKCE verifier OpenClaw thanks @BG0ECV for reporting. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 6.3 |
| Risk | 3.1 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| System | Score | Found at |
|---|---|---|
| cvssv4 | 7.0 | https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-9jpj-g8vv-j5mf/GHSA-9jpj-g8vv-j5mf.json |
| generic_textual | HIGH |
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/2026-04-06T16:56:07Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/34xxx/CVE-2026-34511.json
Source Advisory: vulnrichment/CVE-2026-34511
[{'Exploitation': 'none'},
{'Automatable': 'no'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]