CVE-2026-88974

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.

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

• UNSCOREDCVE-2026-100371PoC
• UNSCOREDCVE-2026-100392PoC
• MEDIUMCVE-2026-100529PoC
• HIGHCVE-2026-100530PoC
• HIGHCVE-2026-100535PoC
• MEDIUMCVE-2026-100538PoC
• LOWCVE-2026-100539PoC
• MEDIUMCVE-2026-100540PoC

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