CVE-2023-37473: Limited code execution in zenstruck/collections

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-14 · updated 2026-06-17
Weakness: CWE-74

Description

zenstruck/collections is a set of helpers for iterating/paginating/filtering collections. Passing _callable strings_ (ie `system`) caused the function to be executed. This would result in a limited subset of specific user input being executed as if it were code. This issue has been addressed in commit `f4b1c48820` and included in release version 0.2.1. Users are advised to upgrade. Users unable to upgrade should ensure that user input is not passed to either `EntityRepository::find()` or `query()`.

Affected products

zenstruck collection: 0.2.1

References

https://github.com/zenstruck/collection/commit/f4b1c488206e1b1581b06fcd331686846f13f19c
https://github.com/zenstruck/collection/releases/tag/v0.2.1
https://github.com/zenstruck/collection/security/advisories/GHSA-7xr2-8ff7-6fjq
https://github.com/zenstruck/collection/commit/f4b1c488206e1b1581b06fcd331686846f13f19c
https://github.com/zenstruck/collection/releases/tag/v0.2.1
https://github.com/zenstruck/collection/security/advisories/GHSA-7xr2-8ff7-6fjq

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