Vulnerability · Published Nov 2, 2026 · Assigned by VulnCheck

CVE-2026-120315LobeHub Chat 1.84.26 before 2.1.49 Path Traversal RCE via writeTempFile

High 8.8

In plain English

A high-severity path traversal in chat from lobehub. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 61.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
lobehub	chat	1.84.26 – before 2.1.49

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-2g9j-v25c-4j97) vendor-advisory
VulnCheck Advisory: LobeHub Chat 1.84.26 before 2.1.49 Path Traversal RCE via writeTempFile third-party-advisory