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Description

OpenClaw versions prior to 2026.2.21 improperly parse the left-most X-Forwarded-For header value when requests originate from configured trusted proxies, allowing attackers to spoof client IP addresses. In proxy chains that append or preserve header values, attackers can inject malicious header content to influence security decisions including authentication rate-limiting and IP-based access controls.

PUBLISHED Reserved 2026-03-10 | Published 2026-03-19 | Updated 2026-03-25 | Assigner VulnCheck




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

MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-345: Insufficient Verification of Data Authenticity

Product status

Default status
unaffected

Any version before 2026.2.21
affected

2026.2.21 (semver)
unaffected

Credits

Anthony DiSanti (@AnthonyDiSanti) finder

Vincent Koc (@vincentkoc) finder

References

github.com/...enclaw/security/advisories/GHSA-2rgf-hm63-5qph (GitHub Security Advisory (GHSA-2rgf-hm63-5qph)) third-party-advisory

github.com/...ommit/07039dc089e51589a213ec0d16f8d6f2cd871fa1 (Patch Commit #1) patch

github.com/...ommit/8877bfd11ec7760b115b2d0d7500a45da2749747 (Patch Commit #2) patch

www.vulncheck.com/...fing-via-x-forwarded-for-header-parsing (VulnCheck Advisory: OpenClaw < 2026.2.21 - Client IP Spoofing via X-Forwarded-For Header Parsing) third-party-advisory

cve.org (CVE-2026-32029)

nvd.nist.gov (CVE-2026-32029)

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