CVE-2026-34511: medium-severity vulnerability in OpenClaw
OpenClaw < 2026.4.2 - PKCE Verifier Exposure via OAuth State Parameter
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6epss 0.4%
exploitation probability
0.4%top 65% of all CVEs
observed exploitation
nono source reports it
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, defeating PKCE protection and enabling token redemption.
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
Affected products
OpenClaw · OpenClawRelated CVEs — OpenClaw
In the same product, most dangerous first.
CVE-2026-25253HIGHCVE-2026-25253EPSS 24.4%CVE-2026-32917CRITICALOpenClaw < 2026.3.13 - Remote Command Injection via Unsanitized iMessage Attachment Paths in SCPEPSS 3.2%CVE-2026-53822HIGHOpenClaw < 2026.5.18 - Command Argument Modification via Shell Wrapper Between Approval and ExecutionEPSS 2.0%CVE-2026-32052MEDIUMOpenClaw < 2026.2.24 - Hidden Command Execution via Shell-Wrapper Positional argv CarriersEPSS 1.6%CVE-2026-44998LOWOpenClaw < 2026.4.20 - Tool Policy Bypass via Bundled MCP/LSP ToolsEPSS 1.2%CVE-2026-44109CRITICALOpenClaw < 2026.4.15 - Authentication Bypass in Feishu Webhook and Card-Action ValidationEPSS 1.1%