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CVE-2021-28791

23
FAUCET Score

CVE-2021-28791 describes a critical vulnerability in unofficial SwiftFormat extensions for Visual Studio Code prior to version 1.3.7, allowing remote attackers to execute arbitrary code. By crafting a malicious workspace with a specially designed swiftformat.path configuration, an attacker can trigger code execution when a user opens the workspace. This vulnerability carries a high CVSS score of 7.8, indicating a high impact on confidentiality, integrity, and availability, with a low attack complexity requiring user interaction. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting it is not widely targeted.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.3.7CPE matchmatch criteria
cpe:2.3:a:swiftformat_project:swiftformat:*:*:*:*:*:visual_studio_code:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 72nd percentile among its peer group of 11,621 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 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 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / vknabel/vscode-swiftformat/releases/tag/1.3.7
Release NotesThird Party Advisory
vuln.ryotak.me / advisories/13
Third Party Advisory