PatchTheCVECVE-2021-30503: The unofficial GLSL Linting extension before 1.4.0 for Visual Studio Code allows remote code execution via a c
CVE-2021-30503 is a critical-severity flaw (CVSS 9.8) affecting glsl linting. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.9% (top 13%) |
| CISA exploited list | No |
| Published | 2021-04-13 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-30503?
glsl linting: upgrade to 1.4.0. Exact commands for each OS are on this page.
Is CVE-2021-30503 being exploited?
CVE-2021-30503 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-30503 affect?
CVE-2021-30503 affects glsl linting. Severity is critical (CVSS 9.8). 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 urgent is CVE-2021-30503?
Priority 61/100. Critical severity; Remotely exploitable, no login, no user action