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.
CVE-2026-88974
MEDIUMPre-NVD 5.45.4—Trending — 3 sources updated this weekElevated
EchelonGraph scoreHIGH confidence
Score 5.4 from GitHub Security Advisory published 2026-09-23. a secondary CVSS source baseline 5.4; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: ghsa, secondary
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 5.4Exploit: Elevated riskExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 5.4
- EG Score
- 5.4(high)
- EG Risk
- 40(Track)EG Risk 40/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity54% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
September 23, 2026
Last Modified
September 23, 2026
Advisory Details (3)
Auto-updated Sep 23, 2026Patch available. Sources: github, github_pr, github_commit.
github_commit Patch Available
commit 55441663eaa3 (wp-graphql/wp-graphql)
Patch available: wp-graphql/wp-graphql wp-graphql/v2.22.2 (contains commit 55441663eaa3)
https://github.com/wp-graphql/wp-graphql/commit/55441663eaa33c3f2e05de038c8286c845916461github_pr Patch Available
fix(security): do not invoke bare callable-string field definitions in Model
Patch available: wp-graphql/wp-graphql wp-graphql/v2.22.2 (PR #4270 merged 2026-09-04)
https://github.com/wp-graphql/wp-graphql/pull/4270github Patch Available
Contributor can publish and modify posts without the required capabilities via updatePost · Advisory · wp-graphql/wp-graphql · GitHub
https://github.com/wp-graphql/wp-graphql/security/advisories/GHSA-5mmc-8pc9-wgggVendor Advisories for CVE-2026-88974(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| composer | wp-graphql/wp-graphql | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 10× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-23 18:18 UTCGHSA enrichment
- 2026-09-23 17:19 UTCEG score recompute
- 2026-09-23 17:19 UTCGHSA enrichment
- 2026-09-23 16:40 UTCEG score recompute
- 2026-09-23 16:40 UTCGHSA enrichment
- 2026-09-23 15:17 UTCEG score recompute
- 2026-09-23 15:17 UTCGHSA enrichment
- 2026-09-23 14:24 UTCEG score recompute
- 2026-09-23 14:24 UTCGHSA enrichment
- 2026-09-23 14:24 UTCMITRE cvelistV5first tracked
Related CVEs(same product + same CWE)
Same CWE
10 shownCWE-863
Frequently asked(4)
What is CVE-2026-88974?
CVE-2026-88974 is a medium vulnerability published on September 23, 2026. 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 editposts capability and the post author, but does not enforce the object-level editpost capability or require publishposts for public…
When was CVE-2026-88974 disclosed?
CVE-2026-88974 was first published in the National Vulnerability Database on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-88974?
CVE-2026-88974 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-88974?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88974, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-88974
Is Your Infrastructure Affected by CVE-2026-88974?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.