CVE-2026-28475

LOWCVSS 3.7/10EPSS 0.28%

Last modified

CVE-2026-28475 is a low-severity vulnerability rated 3.7/10 on the CVSS scale. 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.. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

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.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
OpenclawOpenclaw< 2026.2.13

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-28475?
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.
How severe is CVE-2026-28475?
CVE-2026-28475 has a CVSS score of 3.7/10 (LOW severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2026-28475?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST