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CVE-2023-52137

26
FAUCET Score

CVE-2023-52137 is a command injection vulnerability affecting the tj-actions/verify-changed-files GitHub Action, where specially crafted filenames containing special characters can lead to arbitrary code execution on the GitHub Runner. This high-severity vulnerability (CVSS 8.8) allows an attacker to potentially steal secrets like GITHUB_TOKEN if the action's output is used unsafely in a 'run' block. While no active exploitation or public exploit code is reported, and community discussion is minimal, the potential for high impact on confidentiality, integrity, and availability is significant. The vulnerability has been patched in versions 17 and 17.0.0 by enabling safe_output by default.

Impacted Technologies

VendorProductVersion(s)CPE
< 17.0.0CPE matchmatch criteria
cpe:2.3:a:tj-actions:verify-changed-files:*:*:*:*:*:github:*:*

CVSS Data

CVSS version used by this source: 3.1

7.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.8
Impact Score
5.3
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.62%
Probability of exploitation in next 30 days
EPSS Percentile
83.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0262 is in the 82nd percentile among its peer group of 17,829 CVEs.

Social Chatter

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

Remediation

Patch Available

Vendor Patches (2)

actionspatch availablevia ghsa
Product: tj-actions/verify-changed-filesFixed in: 17
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

actionsGHSA-ghm2-rq8q-wrhchigh

Potential Actions command injection in output filenames (GHSL-2023-275)

Jan 2, 2024

References

github.com / tj-actions/verify-changed-files/commit/498d3f316f501aa72485060e8c96fde7b2014f12
Patch
github.com / tj-actions/verify-changed-files/commit/592e305da041c09a009afa4a43c97d889bed65c3
Patch
github.com / tj-actions/verify-changed-files/security/advisories/GHSA-ghm2-rq8q-wrhc
ExploitMitigationThird Party Advisory