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Permalink CVE-2026-28394
6.5 MEDIUM
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): NONE
  • User interaction (UI): REQUIRED
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): NONE
  • Integrity impact (I): NONE
  • Availability impact (A): HIGH
updated 1 month, 3 weeks ago by @mweinelt Activity log
  • Created suggestion 1 month, 3 weeks ago
  • @mweinelt dismissed 1 month, 3 weeks ago
OpenClaw < 2026.2.15 - Denial of Service via Unbounded Response Parsing in web_fetch Tool

OpenClaw versions prior to 2026.2.15 contain a denial of service vulnerability in the web_fetch tool that allows attackers to crash the Gateway process through memory exhaustion by parsing oversized or deeply nested HTML responses. Remote attackers can social-engineer users into fetching malicious URLs with pathological HTML structures to exhaust server memory and cause service unavailability.

Affected products

OpenClaw
  • <2026.2.15

Matching in nixpkgs

pkgs.openclaw

Self-hosted, open-source AI assistant/agent

Package maintainers

Unafffected, never had 2026.2.15 or older.