CVE-2026-41913 | THREATINT

Description

OpenClaw before 2026.4.4 contains a race condition vulnerability in shared-secret authentication that allows concurrent asynchronous requests to bypass the per-key rate-limit budget. Attackers can exploit this by sending multiple simultaneous authentication attempts to circumvent intended rate-limiting protections on Tailscale-capable paths.

PUBLISHED Reserved 2026-04-22 | Published 2026-04-28 | Updated 2026-04-29 | Assigner VulnCheck

MEDIUM: 6.3CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Product status

Default status

unaffected

Any version before 2026.4.4

affected

2026.4.4 (semver)

unaffected

Credits

Akiyama Mio (@Telecaster2147) reporter

References

github.com/...enclaw/security/advisories/GHSA-25wv-8phj-8p7r (GitHub Security Advisory (GHSA-25wv-8phj-8p7r)) vendor-advisory

github.com/...ommit/d7c3210cd6f5fdfdc1beff4c9541673e814354d5 (Patch Commit) patch

www.vulncheck.com/...oncurrent-async-authentication-attempts (VulnCheck Advisory: OpenClaw < 2026.4.4 - Rate-Limit Bypass via Concurrent Async Authentication Attempts) third-party-advisory

cve.org (CVE-2026-41913)

nvd.nist.gov (CVE-2026-41913)

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