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Vulnerability record · CVE-2026-28464 · published 5 March 2026

CVE-2026-28464: Openclaw vulnerability

Openclaw · Openclaw

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.

8.2 CVSS 4.0 High EPSS 0.69% · top 49.1% CWE-208 · CWE-208
8.2CVSS 4.0 base score
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-30741Openclaw code injection vulnerabilityA remote code execution (RCE) vulnerability in OpenClaw Agent Platform v2026.2.6 allows attackers to execute arbitrary code via a Request-Side prompt…EPSS 1.2%9.4CVE-2026-33579Openclaw incorrect authorization vulnerabilityOpenClaw before 2026.3.28 contains a privilege escalation vulnerability in the /pair approve command path that fails to forward caller scopes into th…EPSS 0.51%9.4CVE-2026-32978Openclaw incorrect authorization vulnerabilityOpenClaw before 2026.3.11 contains an approval integrity vulnerability where system.run approvals fail to bind mutable file operands for certain scri…EPSS 0.32%9.4CVE-2026-32922Openclaw vulnerabilityOpenClaw before 2026.3.11 contains a privilege escalation vulnerability in device.token.rotate that allows callers with operator.pairing scope to min…EPSS 0.69%9.4CVE-2026-22172Openclaw missing authorization vulnerabilityOpenClaw versions prior to 2026.3.12 contain an authorization bypass vulnerability in the WebSocket connect path that allows shared-token or password…EPSS 0.56%9.4CVE-2026-28466Openclaw incorrect authorization vulnerabilityOpenClaw versions prior to 2026.2.14 contain a vulnerability in the gateway in which it fails to sanitize internal approval fields in node.invoke par…EPSS 0.67%9.3CVE-2026-43534Openclaw insufficient verification of data authenticity vulnerabilityOpenClaw before 2026.4.10 contains an input validation vulnerability that allows external hook metadata to be enqueued as trusted system events. Atta…EPSS 0.30%9.3CVE-2026-32987Openclaw authentication bypass by capture-replay vulnerabilityOpenClaw before 2026.3.13 allows bootstrap setup codes to be replayed during device pairing verification in src/infra/device-bootstrap.ts. Attackers …EPSS 0.61%

Source: NIST National Vulnerability Database (record CVE-2026-28464), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.