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Description

OpenClaw versions prior to 2026.2.12 contain a vulnerability in the BlueBubbles (optional plugin) webhook handler in which it authenticates requests based solely on loopback remoteAddress without validating forwarding headers, allowing bypass of configured webhook passwords. When the gateway operates behind a reverse proxy, unauthenticated remote attackers can inject arbitrary BlueBubbles message and reaction events by reaching the proxy endpoint.

PUBLISHED Reserved 2026-03-04 | Published 2026-03-05 | Updated 2026-03-06 | Assigner VulnCheck




HIGH: 8.2CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

MEDIUM: 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Problem types

Missing Authentication for Critical Function

Product status

Default status
unaffected

Any version before 2026.2.12
affected

Credits

Petr Simecek (@simecek) reporter

Stanislav Fort, Aisle Research, www.aisle.com analyst

References

github.com/...enclaw/security/advisories/GHSA-xc7w-v5x6-cc87 (GitHub Security Advisory (GHSA-xc7w-v5x6-cc87)) vendor-advisory

github.com/...ommit/f836c385ffc746cb954e8ee409f99d079bfdcd2f (Patch Commit) patch

github.com/...ommit/743f4b28495cdeb0d5bf76f6ebf4af01f6a02e5a (Hardening Commit) patch

www.vulncheck.com/...bypass-via-loopback-remoteaddress-trust (VulnCheck Advisory: OpenClaw < 2026.2.12 - Webhook Authentication Bypass via Loopback remoteAddress Trust) third-party-advisory

cve.org (CVE-2026-29613)

nvd.nist.gov (CVE-2026-29613)

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