medium5.4
CVE-2026-88974
WPGraphQL: Contributor can publish and modify posts without the required capabilities via updatePost
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | wp-graphql/wp-graphql | < 2.22.2 | none recorded |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-5mmc-8pc9-wggg
- https://github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5mmc-8pc9-wggg
- https://github.com/wp-graphql/wp-graphql/pull/4270
- https://github.com/wp-graphql/wp-graphql/commit/55441663eaa33c3f2e05de038c8286c845916461
- https://github.com/wp-graphql/wp-graphql/releases/tag/wp-graphql%2Fv2.22.2