CVE-2026-28475 OpenClaw < 2026.2.13 - Timing Attack via Hook Token Comparison
Remote attackers can recover authentication tokens via timing side-channels in hook validation, potentially bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-28475?
CVE-2026-28475 is a medium-severity vulnerability in Openclaw Openclaw, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-208
Which versions are affected by CVE-2026-28475?
2 open source packages ship an affected version, including openclaw. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
openclaw npm | All versions | 2026.2.13 |
openclaw npm | All versions | 2026.2.13 |
Products include Openclaw Openclaw.
How do I fix CVE-2026-28475?
Upgrade openclaw to 2026.2.13 or later.
Is CVE-2026-28475 being exploited?
There is no known exploitation of CVE-2026-28475 in the wild and no public exploit code.
Other vulnerabilities in Openclaw Openclaw
- CVE-2026-28363 Security feature bypass in OpenClaw
- CVE-2026-30741 Code injection in n/a
- CVE-2026-33579 OpenClaw < 2026.3.28 - Privilege Escalation via Missing Caller Scope Validation in Device Pair Approval
- CVE-2026-32922 OpenClaw < 2026.3.11 - Privilege Escalation via Unvalidated Scope in device.token.rotate
- CVE-2026-32978 OpenClaw < 2026.3.11 - Approval Bypass via Unrecognized Script Runners
Sources
Also known as GHSA-47q7-97xp-m272.