CVE-2026-44118 | THREATINT

Description

OpenClaw before 2026.4.22 derives loopback MCP owner context from spoofable server-issued bearer tokens in request headers. Non-owner loopback clients can present themselves as owner to bypass owner-gated operations by manipulating the sender-owner header metadata.

PUBLISHED Reserved 2026-05-05 | Published 2026-05-06 | Updated 2026-05-07 | Assigner VulnCheck

HIGH: 8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-290: Authentication Bypass by Spoofing

Product status

Default status

unaffected

Any version before 2026.4.22

affected

2026.4.22 (semver)

unaffected

Credits

vladimir tokarev (@VladimirEliTokarev) reporter

References

github.com/...enclaw/security/advisories/GHSA-r6xh-pqhr-v4xh (GitHub Security Advisory (GHSA-r6xh-pqhr-v4xh)) vendor-advisory

github.com/...ommit/3cb1a56bfc9579a0f2336f9cfa12a8a744332a19 (Patch Commit) patch

www.vulncheck.com/...ontext-spoofing-via-bearer-token-header (VulnCheck Advisory: OpenClaw < 2026.4.22 - Owner Context Spoofing via Bearer Token Header) third-party-advisory

cve.org (CVE-2026-44118)

nvd.nist.gov (CVE-2026-44118)

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