CVE-2026-34508

EUVD-2026-17393
OpenClaw before 2026.3.12 applies rate limiting only after webhook authentication succeeds, allowing attackers to bypass rate limits and brute-force webhook secrets without triggering 429 responses. Attackers can repeatedly guess invalid secrets to discover valid credentials and subsequently submit forged Zalo webhook traffic.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
VulnCheckCNA
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
openclawopenclaw
𝑥
< 2026.3.12
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/openclaw/openclaw/security/advisories/GHSA-5m9r-p9g7-679c
https://www.vulncheck.com/advisories/openclaw-webhook-rate-limiting-bypass-via-pre-authentication-secret-validation-2