CVE-2026-58578: Lobehub · LobeChat before version 2.2.10-canary.15 contains a regular expression denial of service (ReDoS) vulnerability that allows authenticated attackers
Affects lobehubSource GCVE Database
Not known to be exploited · CVSS 6.5 Medium.
Data as of 30 Oct 2026, 06:59 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 45% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 2 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHublobehub/lobehubpkg:github/lobehub/lobehubOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is available, avoid importing skills from untrusted GitHub repository URLs or restrict authenticated user input to prevent injection of unescaped regex metacharacters in the basePath parameter.
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.
References
- nvd.nist.gov/vuln/detail/CVE-2026-58578 (opens in a new tab)
- github.com/lobehub/lobehub/issues/16494 (opens in a new tab)
- github.com/lobehub/lobehub/pull/16548 (opens in a new tab)
- github.com/lobehub/lobehub/commit/349bbe326eb8635d6d9c6a96d12702681ae3a84a (opens in a new tab)
- github.com/lobehub/lobehub/releases/tag/v2.2.10-canary.15 (opens in a new tab)
- vulncheck.com/advisories/lobechat-canary-15-regular-expression-denial-of-service-in-github-skill-import (opens in a new tab)