OpenClaw before 2026.4.2 reuses the PKCE verifier as the OAuth state parameter in the Gemini OAuth flow, exposing it through the redirect URL. Attackers who capture the redirect URL can obtain both the authorization code and PKCE verifier, …
Historical advisory saved 11 Nov 2026 09:28:28 UTC. The publisher may have updated it since then. Latest advisory.
euvd · EUVD-2026-18849
PublishedOpenClaw before 2026.4.2 reuses the PKCE verifier as the OAuth state parameter in the Gemini OAuth flow, exposing it through the redirect URL. Attackers who capture the redirect URL can obtain both the authorization code and PKCE verifier, defeating PKCE protection and enabling token redemption.
Additional publisher context
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Apr 3, 2026, 8:45:41 PM
dateUpdated: Sep 24, 2026, 2:17:31 PM
1 related source bulletins · separate from aliases
WID-SEC-W-2026-0980: OpenClaw: Mehrere Schwachstellen
CVE-2026-34425 · CVE-2026-34426 · CVE-2026-34511 · CVE-2026-41295 · CVE-2026-41298 · CVE-2026-41301 · CVE-2026-41339 · CVE-2026-41346 · CVE-2026-41348 · CVE-2026-41351 · CVE-2026-41352 · CVE-2026-41354 · CVE-2026-41358 · CVE-2026-41360 · CVE-2026-41362 · CVE-2026-41372 · CVE-2026-41383 · CVE-2026-41388 · CVE-2026-41398 · CVE-2026-41400 · CVE-2026-41407
- Source published
- Apr 3, 2026, 8:45:41 PM (timezone not stated)
- Source modified
- Sep 24, 2026, 2:17:31 PM (timezone not stated)
- Saved here
- 11 Nov 2026 09:28:28 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
Source: euvd · ENISA EUVD · source terms and attribution apply. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
EUVD CVSS 4.0 · 6.0 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N