title: Directory traversal allowing overwriting arbitrary files
description: MesonLSP is an unofficial, unendorsed language server for meson written in C++. A vulnerability in versions prior to 4.1.4 allows overwriting arbitrary files if the attacker can make the victim either run the language server within a specific crafted project or `mesonlsp --full`. Version 4.1.4 contains a patch for this issue. As a workaround, avoid running `mesonlsp --full` and set the language server option `others.neverDownloadAutomatically` to `true`.
problem types: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
affected:
{
vendor: JCWasmx86
product: mesonlsp
versions:
version: < 4.1.4, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: LOW
baseScore: 5.8
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: HIGH
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L
version: 3.1
]