CVE-2026-35670

OpenClaw < 2026.3.22 - Webhook Reply Rebinding via Username Resolution in Synology Chat

State: Published
Severity: 6.0 Medium
Published: Apr 10, 2026
Updated: Jun 23, 2026
Reserved: Apr 4, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.0 Medium	CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	5.9 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N	VulnCheck

Weaknesses

CWE-807 Reliance on Untrusted Inputs in a Security Decision

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.3.22Affected 2026.3.22Not affected

References

GitHub Security Advisory (GHSA-wv46-v6xc-2qhf)vendor-advisory
Patch Commit #1patch
Patch Commit #2patch
VulnCheck Advisory: OpenClaw < 2026.3.22 - Webhook Reply Rebinding via Username Resolution in Synology Chatthird-party-advisory

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