Vulnerability in Openclaw
CVE-2026-35627
OpenClaw before 2026.3.22 performs cryptographic and dispatch operations on inbound Nostr direct messages before enforcing sender and pairing policy validation. Attackers can trigger unauthorized pre-authentication computation by sending crafted DM messages, enabling denial of service through resource exhaustion.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.007 · change: +0.002
Affected products
- Openclaw — versions 0, 2026.3.22
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-65h8-27jh-q8wv (vendor-advisory, Vendor Advisory, third-party-advisory)
- github.com/openclaw/openclaw/commit/630f1479c44f78484dfa21bb407cbe6f171dac87 (Patch, patch)
- github.com/openclaw/openclaw/commit/1ee9611079e81b9122f4bed01abb3d9f56206c77 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-unauthenticated-cryptographic-work-in-nos… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-35627?
- CVE-2026-35627 is a medium-severity vulnerability in Openclaw, classified under CWE-696. CVSS score: 6.5/10. Published 2026-04-09.
- How severe is CVE-2026-35627?
- Medium severity. CVSS v3 base score is 6.5 out of 10.