What’s Vulnerable › Vulnerabilities

CVE-2026-88974: WPGraphQL: Contributor can publish and modify posts without the required capabilities via updatePost

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-23 · updated 2026-09-23
• Weakness: CWE-863

Description

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 products

• wp-graphql: before 2.22.2

References

• 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

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