CVE-2024-30254
Directory traversal allowing overwriting arbitrary files
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Directory traversal allowing overwriting arbitrary files
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.
- Record
CVE-2024-30254- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L - Weakness
- CWE-22
- Updated
- 2026-11-02
EUVDEUVD-2024-28181
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.
- Record
EUVD-2024-28181- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L - Updated
- 2026-11-03
NVD
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.
- Record
CVE-2024-30254- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L - Weakness
- CWE-22
- Updated
- 2026-11-02
OSV
Directory traversal allowing overwriting arbitrary files
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.
- Record
CVE-2024-30254- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:L - Weakness
- CWE-22
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2024-30254 is a medium vulnerability (CVSS 5.8) in Jcwasmx86 Mesonlsp, published April 4, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.19%, the 8th percentile. No source names a fixed version.