What’s Vulnerable › Vulnerabilities

CVE-2026-28475: OpenClaw < 2026.2.13 - Timing Attack via Hook Token Comparison

• Severity: low (CVSS 3.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-05 · updated 2026-06-17
• Weakness: CWE-208

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.

Affected products

• OpenClaw: before 2026.2.13 — fixed in 2026.2.13

How to fix

Upgrade to a fixed version: OpenClaw 2026.2.13. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/113ebfd6a23c4beb8a575d48f7482593254506ec
• https://github.com/openclaw/openclaw/security/advisories/GHSA-47q7-97xp-m272
• https://www.vulncheck.com/advisories/openclaw-timing-attack-via-hook-token-comparison

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