Home

Description

OpenClaw before 2026.3.22 contains a webhook reply delivery vulnerability that allows attackers to rebind chat replies to unintended users by exploiting mutable username matching instead of stable numeric user identifiers. Attackers can manipulate username changes to redirect webhook-triggered replies to different users, bypassing the intended recipient binding recorded in webhook events.

PUBLISHED Reserved 2026-04-04 | Published 2026-04-10 | Updated 2026-05-25 | Assigner VulnCheck




MEDIUM: 6.0CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

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

Problem types

CWE-807 Reliance on Untrusted Inputs in a Security Decision

Product status

Default status
unaffected

Any version before 2026.3.22
affected

2026.3.22 (semver)
unaffected

Credits

Nathan (@nexrin) reporter

KeenSecurityLab finder

References

github.com/...enclaw/security/advisories/GHSA-wv46-v6xc-2qhf (GitHub Security Advisory (GHSA-wv46-v6xc-2qhf)) third-party-advisory

github.com/...ommit/630f1479c44f78484dfa21bb407cbe6f171dac87 (Patch Commit #1) patch

github.com/...ommit/7ade3553b74ee3f461c4acd216653d5ba411f455 (Patch Commit #2) patch

www.vulncheck.com/...ia-username-resolution-in-synology-chat (VulnCheck Advisory: OpenClaw < 2026.3.22 - Webhook Reply Rebinding via Username Resolution in Synology Chat) third-party-advisory

cve.org (CVE-2026-35670)

nvd.nist.gov (CVE-2026-35670)

Download JSON