CVE-2026-49858

Summary

API Platform Core is a system to create hypermedia-driven REST and GraphQL APIs. In versions from 2.6.0 prior to 4.1.29, 4.2.26, and 4.3.12, a missing isCacheKeySafe gate in the JSON:API and HAL item normalizers causes a cross-user attribute leak. #[ApiProperty(security: …)] is evaluated per request to decide whether a property is exposed. The componentsCache arrays in ApiPlatform\JsonApi\Serializer\ItemNormalizer and ApiPlatform\Hal\Serializer\ItemNormalizer are keyed on $context['cache_key'], which is set unconditionally before delegating to the parent normalizer. The component structure (attributes, relationships, links) computed for one request can therefore be reused for a subsequent request whose user has a different set of accessible properties. A user with lower privileges may end up seeing the structure of properties that the security predicate would otherwise have hidden for them. This issue has been fixed in versions 4.1.29, 4.2.26, and 4.3.12.

Affected Software

VendorProductVersion RangeStatus
api-platformcore>= 2.6.0, < 4.1.29affected
api-platformcore>= 4.2.0, < 4.2.25affected
api-platformcore>= 4.3.0, < 4.3.8affected
api-platformapi-platform/hal>= 2.6.0, < 4.1.29affected
api-platformapi-platform/hal>= 4.2.0, < 4.2.25affected
api-platformapi-platform/hal>= 4.3.0, < 4.3.8affected
api-platformapi-platform/json-api>= 2.6.0, < 4.1.29affected
api-platformapi-platform/json-api>= 4.2.0, < 4.2.25affected
api-platformapi-platform/json-api>= 4.3.0, < 4.3.8affected

Weaknesses

  • CWE-524: CWE-524: Use of Cache Containing Sensitive Information
  • CWE-639: CWE-639: Authorization Bypass Through User-Controlled Key

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References