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CVE-2021-28956

28
FAUCET Score

CVE-2021-28956 describes a critical vulnerability in the unofficial vscode-sass-lint extension for Visual Studio Code, affecting versions through 1.0.7. This flaw allows attackers to execute arbitrary binaries if a user opens a specially crafted workspace. With a CVSS score of 8.8 (High), the vulnerability has a network attack vector, low attack complexity, and high potential impact on confidentiality, integrity, and availability, requiring user interaction to exploit. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage, and it affects products no longer supported by the maintainer.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.7CPE matchmatch criteria
cpe:2.3:a:sass_lint_project:sass_lint:*:*:*:*:*:visual_studio_code:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.54%
Probability of exploitation in next 30 days
EPSS Percentile
72.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0154 is in the 71st percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / glen-84/vscode-sass-lint/compare/v1.0.6...v1.0.7
PatchRelease NotesThird Party Advisory
github.com / glen-84/vscode-sass-lint/releases
Release NotesThird Party Advisory
marketplace.visualstudio.com / items/glen-84.sass-lint/changelog
Release NotesVendor Advisory
vuln.ryotak.me / advisories/1
Third Party Advisory