Detections
Analytics

CVE-2026-35670

medium

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.

References

https://www.vulncheck.com/advisories/openclaw-webhook-reply-rebinding-via-username-resolution-in-synology-chat

https://github.com/openclaw/openclaw/security/advisories/GHSA-wv46-v6xc-2qhf

https://github.com/openclaw/openclaw/commit/7ade3553b74ee3f461c4acd216653d5ba411f455

https://github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87

Details

Source: Mitre, NVD

Published: 2026-04-10

Updated: 2026-04-13

Risk Information

CVSS v2

Base Score: 8.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 8.1

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

Severity: High

CVSS v4

Base Score: 6

Vector: 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

Severity: Medium

EPSS

EPSS: 0.00071