CVE-2026-88974

MEDIUM 5.4

WPGraphQL: Contributor can publish and modify posts without the required capabilities via updatePost

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

WPGraphQL provides a GraphQL API for WordPress sites. Prior to 2.22.2, the updatePost mutation in src/Mutation/PostObjectUpdate.php checks only the collection-level edit_posts capability and the post author, but does not enforce the object-level edit_post capability or require publish_posts for public status transitions. An authenticated Contributor can therefore publish the Contributor's own draft without editorial approval or modify the Contributor's previously published post despite lacking edit_published_posts, while posts owned by other authors remain protected. This issue is fixed in version 2.22.2.

CWE	CWE-863
Vendor	wp-graphql
Product	wp-graphql
Published	Sep 23, 2026
Last Updated	Sep 23, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Affected Versions

wp-graphql / wp-graphql

< 2.22.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5mmc-8pc9-wggg github.com: https://github.com/wp-graphql/wp-graphql/pull/4270 github.com: https://github.com/wp-graphql/wp-graphql/commit/55441663eaa33c3f2e05de038c8286c845916461 github.com: https://github.com/wp-graphql/wp-graphql/releases/tag/wp-graphql%2Fv2.22.2