CVE-2021-30503

CRITICALNVD 9.89.8—

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 87.5%
KEV: Not listed

Published

April 13, 2021

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jun 7, 2026

Patch available. Sources: github_commit.

generic

Advisory #27 - RyotaK's Vuln DB

https://vuln.ryotak.me/advisories/27

generic

Changelog | Visual Studio Marketplace

https://marketplace.visualstudio.com/items/CADENAS.vscode-glsllint/changelog#:~:text=1.4.x

github_commit Patch Available

commit 3effba525bdf (hsimpson/vscode-glsllint)

Patch available: hsimpson/vscode-glsllint 1.4.0 (contains commit 3effba525bdf)

https://github.com/hsimpson/vscode-glsllint/commit/3effba525bdff7d4257e66a6815ff956d2bce8ac

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-863Incorrect Authorization

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-07 17:46 UTCOSV refresh
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-30503?

CVE-2021-30503 is a critical vulnerability published on April 13, 2021. 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.

When was CVE-2021-30503 disclosed?

CVE-2021-30503 was first published in the National Vulnerability Database on April 13, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-30503 actively exploited?

CVE-2021-30503 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-30503?

CVE-2021-30503 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-30503?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-30503, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-30503

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CVE-2021-30503

📅 Published

🔄 Last Modified

📋 Advisory Details (3)