CVE-2026-65954: Code Injection (CVSS 8.6)

Description

PHPCSUtils is a suite of utility functions for use with PHP_CodeSniffer. From 1.0.0-alpha1 until 1.2.3, PHPCSUtils\AbstractSniffs\AbstractArrayDeclarationSniff::getActualArrayKey() evaluates attacker-controlled array-key expressions with eval(), allowing callback-form keys in untrusted PHP code scanned by an extending sniff to execute arbitrary commands on the scanning host. Known reachable paths include Universal.Arrays.DuplicateArrayKey and Universal.Arrays.MixedArrayKeyTypes. This issue is fixed in version 1.2.3.

Is your site exposed to CVE-2026-65954?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.6

HIGH

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

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.11%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-95 CWE-95

References

Other References

https://github.com/PHPCSStandards/PHPCSUtils/commit/e8648633ff5b8219b1b3e6346ce85abfc30f1429 https://github.com/PHPCSStandards/PHPCSUtils/releases/tag/1.2.3 https://github.com/PHPCSStandards/PHPCSUtils/security/advisories/GHSA-r6hr-vr92-vv28

Frequently Asked Questions

What is CVE-2026-65954? +

PHPCSUtils is a suite of utility functions for use with PHP_CodeSniffer. From 1.0.0-alpha1 until 1.2.3, PHPCSUtils\AbstractSniffs\AbstractArrayDeclarationSniff::getActualArrayKey() evaluates attacker-controlled array-key expressions with eval(), allowing callback-form keys in untrusted PHP code scanned by an extending sniff to execute arbitrary commands on the scanning host. Known reachable paths include Universal.Arrays.DuplicateArrayKey and Universal.Arrays.MixedArrayKeyTypes. This issue is fixed in version 1.2.3. It has a CVSS v3.1 base score of 8.6 (HIGH).

How severe is CVE-2026-65954? +

CVE-2026-65954 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-65954? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-49598

conda-forge-ci-setup is a package installed by conda-forge each time a build is run on CI. The conda-forge-ci-setup-feedstock setup script is …

CVE-2026-44128

SEPPmail Secure Email Gateway before version 15.0.2.1 allows unauthenticated remote code execution in the new GINA UI because an endpoint …

CVE-2026-65643

Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root.

CVE-2025-4318

The AWS Amplify Studio UI component property expressions in the aws-amplify/amplify-codegen-ui package lack input validation. This could potentially allow an …

CVE-2026-8914

In Teltonika Networks RUTOS devices, running versions 7.22 through 7.23.2 and TSWOS devices running versions 1.09 through 1.09.1, due to …

CVE-2025-0868

A vulnerability, that could result in Remote Code Execution (RCE), has been found in DocsGPT. Due to improper parsing of …

CVE-2026-65954