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Description

OpenClaw before 2026.3.22 contains a webhook path route replacement vulnerability in the Synology Chat extension that allows attackers to collapse multi-account configurations onto shared webhook paths. Attackers can exploit inherited or duplicate webhook paths to bypass per-account DM access control policies and replace route ownership across accounts.

PUBLISHED Reserved 2026-04-04 | Published 2026-04-09 | Updated 2026-05-25 | Assigner VulnCheck




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

MEDIUM: 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-706: Use of Incorrectly-Resolved Name or Reference

Product status

Default status
unaffected

Any version before 2026.3.22
affected

2026.3.22 (semver)
unaffected

Credits

tdjackey reporter

References

github.com/...enclaw/security/advisories/GHSA-rqp8-q22p-5j9q (GitHub Security Advisory (GHSA-rqp8-q22p-5j9q)) third-party-advisory

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

github.com/...ommit/980940aa58f862da4e19372597bbc2a9f268d70b (Patch Commit #2) patch

www.vulncheck.com/...lacement-vulnerability-in-synology-chat (VulnCheck Advisory: OpenClaw < 2026.3.22 - Webhook Path Route Replacement Vulnerability in Synology Chat) third-party-advisory

cve.org (CVE-2026-35635)

nvd.nist.gov (CVE-2026-35635)

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