Path Traversal in Lobehub Chat
CVE-2026-120315
LobeHub Chat from 1.84.26 before 2.1.49 contains a path traversal vulnerability that allows authenticated users to write arbitrary files by supplying unsanitized file names to writeTempFile(). Attackers can create a file record via file.createFile with a traversal name, then trigger document parsing to overwrite application files like startServer.js for code execution or denial of service.
Vulnerability class: Path Traversal (Directory Traversal)
Published .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/lobehub/lobehub/security/advisories/GHSA-2g9j-v25c-4j97 (vendor-advisory)
- www.vulncheck.com/advisories/lobehub-chat-1.84.26-before-2.1.49-path-traversal-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-120315?
- CVE-2026-120315 is a high-severity vulnerability in Lobehub Chat, classified under Path Traversal. CVSS score: 8.8/10. Published 2026-11-02.
- How severe is CVE-2026-120315?
- High severity. CVSS v3 base score is 8.8 out of 10.