# api-platform/json-api (Packagist) vulnerabilities

1 known vulnerability (1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://packagist.org/packages/api-platform/json-api

## Advisories (1)

### [CVE-2026-49858](https://cve.now/CVE-2026-49858): API Platform Core: Cross-user attribute leak in JSON:API and HAL item normalizers due to missing isCacheKeySafe gate

- Severity: Medium 5.9
- Published: Jul 1, 2026
- Affected: from 4.0.0, fixed in 4.1.29; from 4.2.0, fixed in 4.2.25; from 4.3.0, fixed in 4.3.8.

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