CVE-2026-35623

OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Webhook Password Rate Limiting

State: Published
Severity: 6.3 Medium
Published: Apr 9, 2026
Updated: Jun 23, 2026
Reserved: Apr 4, 2026

Description

OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in webhook authentication that allows attackers to brute-force weak webhook passwords without throttling. Remote attackers can repeatedly submit incorrect password guesses to the webhook endpoint to compromise authentication and gain unauthorized access.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	4.8 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-307 Improper Restriction of Excessive Authentication Attempts

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.3.25Affected 2026.3.25Not affected

References

GitHub Security Advisory (GHSA-xq8g-hgh6-87hv)vendor-advisory
Patch Commitpatch
VulnCheck Advisory: OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Webhook Password Rate Limitingthird-party-advisory

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