OpenClaw versions prior to 2026.2.21 contain an improper URL scheme validation vulnerability in the assertBrowserNavigationAllowed() function that allows authenticated users with browser-tool access to navigate to file:// URLs. Attackers can exploit this by accessing local files readable by the OpenClaw process user through browser snapshot and extraction actions to exfiltrate sensitive data.
https://www.vulncheck.com/advisories/openclaw-arbitrary-local-file-read-via-browser-navigation-guard
https://github.com/openclaw/openclaw/security/advisories/GHSA-45cg-2683-gfmq
https://github.com/openclaw/openclaw/commit/220bd95eff6838234e8b4b711f86d4565e16e401
Published: 2026-03-19
Updated: 2026-03-23
Base Score: 6.8
Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N
Severity: Medium
Base Score: 6.5
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Severity: Medium
Base Score: 7.1
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00029