CVE-2021-30503

Name: CVE-2021-30503
Creator: NVD / NIST
Published: 2021-04-13T02:15:13.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.91%

Last modified Jun 17, 2026

CVE-2021-30503 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The unofficial GLSL Linting extension before 1.4.0 for Visual Studio Code allows remote code execution via a crafted glslangValidatorPath in the workspace configuration.. EPSS estimates a 2.91% chance of exploitation in the next 30 days.

Description

The unofficial GLSL Linting extension before 1.4.0 for Visual Studio Code allows remote code execution via a crafted glslangValidatorPath in the workspace configuration.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.91%

85.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Glsl Linting Project	Glsl Linting	< 1.4.0

References

https://github.com/hsimpson/vscode-glsllint/commit/3effba525bdff7d4257e66a6815ff956d2bce8acPatch, Third Party Advisory
https://marketplace.visualstudio.com/items/CADENAS.vscode-glsllint/changelog#:~:text=1.4.xRelease Notes, Third Party Advisory
https://vuln.ryotak.me/advisories/27Third Party Advisory
https://github.com/hsimpson/vscode-glsllint/commit/3effba525bdff7d4257e66a6815ff956d2bce8acPatch, Third Party Advisory
https://marketplace.visualstudio.com/items/CADENAS.vscode-glsllint/changelog#:~:text=1.4.xRelease Notes, Third Party Advisory
https://vuln.ryotak.me/advisories/27Third Party Advisory

Timeline

Published: Apr 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30503?

The unofficial GLSL Linting extension before 1.4.0 for Visual Studio Code allows remote code execution via a crafted glslangValidatorPath in the workspace configuration.

How severe is CVE-2021-30503?

CVE-2021-30503 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.91% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30503?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30503?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST