OpenClaw before 2026.4.2 contains an insufficient scope vulnerability in Zalo webhook replay dedupe keys that allows legitimate events from different conversations or senders to collide. Attackers can exploit weak deduplication scoping to cause silent message suppression and disrupt bot workflows across chat sessions.
https://www.vulncheck.com/advisories/openclaw-insufficient-scope-in-zalo-webhook-replay-dedupe-keys
https://github.com/openclaw/openclaw/security/advisories/GHSA-rxmx-g7hr-8mx4
https://github.com/openclaw/openclaw/commit/ef7c553dd16ee579f1d1a363f5881a99726c1412
Published: 2026-04-23
Updated: 2026-04-23
Base Score: 2.6
Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:N/A:P
Severity: Low
Base Score: 3.7
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Severity: Low
Base Score: 6.3
Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Severity: Medium