CVE-2026-28475

medium

Description

OpenClaw versions prior to 2026.2.13 use non-constant-time string comparison for hook token validation, allowing attackers to infer tokens through timing measurements. Remote attackers with network access to the hooks endpoint can exploit timing side-channels across multiple requests to gradually recover the authentication token.

References

Advisories
More

https://www.vulncheck.com/advisories/openclaw-timing-attack-via-hook-token-comparison

https://github.com/openclaw/openclaw/security/advisories/GHSA-47q7-97xp-m272

https://github.com/openclaw/openclaw/commit/113ebfd6a23c4beb8a575d48f7482593254506ec

Details

Source: Mitre, NVD

Published: 2026-03-05

Updated: 2026-03-11

Risk Information

CVSS v2

Base Score: 2.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:P/I:N/A:N

Severity: Low

CVSS v3

Base Score: 3.7

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Severity: Low

CVSS v4

Base Score: 6.3

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00061