CVE-2026-35627

MEDIUM

OpenClaw < 2026.3.22 - Unauthenticated Cryptographic Work in Nostr Inbound DM Handling

Title source: cna
STIX 2.1

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.

References (4)

Core 4
Core References
Third Party Advisory third-party-advisory
GitHub Security Advisory (GHSA-65h8-27jh-q8wv)
https://github.com/openclaw/openclaw/security/advisories/GHSA-65h8-27jh-q8wv
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.3.22 - Unauthenticated Cryptographic Work in Nostr Inbound DM Handling
https://www.vulncheck.com/advisories/openclaw-unauthenticated-cryptographic-work-in-nostr-inbound-dm-handling

Scores

CVSS v3 6.5
EPSS 0.0045
EPSS Percentile 35.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-696
Status published
Products (4)
npm/openclaw 0 - 2026.3.22npm
OpenClaw/OpenClaw < 2026.3.22
openclaw/openclaw < 2026.3.22
OpenClaw/OpenClaw 2026.3.22
Published Apr 09, 2026
Tracked Since Apr 10, 2026