CVE-2026-58578 Details
Description
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.
A regular expression denial-of-service (ReDoS) vulnerability has been identified in LobeChat versions prior to 2.2.10-canary.15. This vulnerability allows authenticated attackers to disrupt the Node.js event loop by introducing a catastrophic-backtracking regex pattern through the GitHub repository URL path during skill import. The unescaped pattern is processed synchronously against ZIP archive entries, causing significant delays and denying service to concurrent users.
Users can update to LobeChat version 2.2.10-canary.15 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 2, 2026CISA-ADP
Assessed Jul 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/lobehub/lobehub/commit/349bbe326eb8635d6d9c6a96d12702681ae3a84a | [email protected] | Source CodeVendor |
| https://github.com/lobehub/lobehub/issues/16494 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://github.com/lobehub/lobehub/pull/16548 | [email protected] | Issue TrackingVendor |
| https://github.com/lobehub/lobehub/releases/tag/v2.2.10-canary.15 | [email protected] | Release NotesVendor |
| https://www.vulncheck.com/advisories/lobechat-canary-15-regular-expression-denial-of-service-in-github-skill-import | [email protected] | AdvisoryRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-1333 | Inefficient Regular Expression Complexity | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| LobeHub | < 2.2.10-canary.15 (semver) |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | CVE Modified | [email protected] |
| Jul 7, 2026 | CVE Modified | CISA-ADP |
| Jul 2, 2026 | New CVE Received | [email protected] |