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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-88974
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-23 15:17:23 UTC
Updated2026-09-23 18:12:04 UTC
DescriptionWPGraphQL 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.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

EPSS: 0.002750000 probability, percentile 0.176560000 (date 2026-09-24)

Problem Types: CWE-863 | CWE-863 CWE-863: Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wp-graphql Wp-graphql affected < 2.22.2 Not specified

References

ReferenceSourceLinkTags
github.com/wp-graphql/wp-graphql/commit/55441663eaa33c3f2e05de038c8286c8... [email protected] github.com
github.com/wp-graphql/wp-graphql/releases/tag/wp-graphql%2Fv2.22.2 [email protected] github.com
github.com/wp-graphql/wp-graphql/pull/4270 [email protected] github.com
github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5mmc-8pc9-wggg 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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