CVE-2026-35627
CWE-696Published: April 9, 2026· Updated: Apr 16, 2026
Official Description
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.
Technical Analysis
CVE-2026-35627 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 8.2.
A proof-of-concept (PoC) exploit exists for CVE-2026-35627. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-696)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-35627 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts