PT-2026-55290 · Lobehub · Lobehub

George Chen · Published 2026-07-02 · Updated 2026-07-02 · CVE-2026-58578

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

LobeChat before version 2.2.10-canary.15 contains a regular expression denial of service (ReDoS) vulnerability that allows authenticated attackers to block the Node.js event loop by supplying a catastrophic-backtracking pattern in a GitHub repository URL path during skill import. Attackers can craft a malicious basePath value containing unescaped regex metacharacters such as catastrophic-backtracking patterns, which are injected into a dynamically constructed regular expression in the findSkillMd function and executed synchronously against archive entries, denying service to all concurrent users for tens of seconds per request.

Exploit

Fix

DoS

Weakness Enumeration

CWE-1333

Related Identifiers

CVE-2026-58578

Affected Products

Lobehub

References · 6

• 🔥 https://github.com/lobehub/lobehub/issues/16494 · Exploit
• https://github.com/lobehub/lobehub/commit/349bbe326eb8635d6d9c6a96d12702681ae3a84a · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-58578 · Security Note
• https://github.com/lobehub/lobehub/pull/16548 · Note
• https://github.com/lobehub/lobehub/releases/tag/v2.2.10-canary.15 · Note
• https://vulncheck.com/advisories/lobechat-canary-15-regular-expression-denial-of-service-in-github-skill-import · Note