medium4.8
CVE-2026-35646
OpenClaw before 2026.3.25 contains a pre-authentication rate-limit bypass vulnerability in webhook token validation that allows attackers to brute-force weak w…
Impact
OpenClaw before 2026.3.25 contains a pre-authentication rate-limit bypass vulnerability in webhook token validation that allows attackers to brute-force weak webhook secrets. The vulnerability exists because invalid webhook tokens are rejected without throttling repeated authentication attempts, enabling attackers to guess weak tokens through rapid successive requests.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | openclaw | < 2026.3.28 | 2026.3.28 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openclaw | Openclaw | before 2026.3.25 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-mf5g-6r6f-ghhm
- https://github.com/openclaw/openclaw/security/advisories/GHSA-mf5g-6r6f-ghhm
- https://github.com/openclaw/openclaw/commit/0b4d07337467f4d40a0cc1ced83d45ceaec0863c
- https://nvd.nist.gov/vuln/detail/CVE-2026-35646
- https://www.vulncheck.com/advisories/openclaw-pre-authentication-rate-limit-bypass-in-webhook-token-validation