CVE-2026-58578: 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 b
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-58578
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-585780.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-58578 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for LobeChat
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-59100: LobeChat through 2.2.9 contains a broken object level authorization vulnerability that allows …nvd · 2026-07-02
- mediumCVE-2026-59098: LobeChat through 2.2.9 contains a broken access control vulnerability in the retrieval-augment…nvd · 2026-07-02
- highCVE-2026-59095: LobeChat before 2.2.10-canary.18 contains a server-side request forgery vulnerability that all…nvd · 2026-07-02
- mediumCVE-2026-58580: LobeChat through 2.2.9 server-database deployments are vulnerable to broken object-level autho…nvd · 2026-07-02
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