Answer in brief
CVE-2026-65954 records a High severity (CVSS 8.6) vulnerability in PHPCSUtils: Remote code execution via eval() in AbstractArrayDeclarationSniff::getActualArrayKey(). The current sources do not mark it as known exploited. The current feed maps phpcsstandards/phpcsutils (composer), PHPCSStandards/PHPCSUtils (generic), phpcsstandards/phpcsutils (packagist). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps phpcsstandards/phpcsutils (composer), PHPCSStandards/PHPCSUtils (generic), phpcsstandards/phpcsutils (packagist). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| phpcsstandards/phpcsutilscomposer | >=1.0.0-alpha1,<1.2.3 | 1.2.3 |
| PHPCSStandards/PHPCSUtilsgeneric | >=1.0.0-alpha1 <=1.2.2 | Not reported |
| phpcsstandards/phpcsutilspackagist | >=1.0.0-alpha1 <1.2.3 | 1.2.3 |
Published upstream
Oct 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 16, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 29, 2026
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.
Quoted source text, attributed separately from HOL analysis.