CVE-2026-4338

HIGHNVD 7.57.5—Elevated

7.5

The ActivityPub WordPress plugin before 8.0.2 does not properly filter posts to be displayed, allowed unauthenticated users to access drafts/scheduled/pending posts

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 7.0%
KEV: Not listed

Published

April 8, 2026

Last Modified

April 14, 2026

References (1)

contact@wpscanhttps://wpscan.com/vulnerability/50f68395-72fc-4f99-8e6d-6aa90cc640b5/

Data Freshness Timeline

(refreshed 12× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 18:32 UTCEG score recompute
2026-05-20 18:32 UTCGHSA enrichment
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-4338?

CVE-2026-4338 is a high vulnerability published on April 8, 2026. The ActivityPub WordPress plugin before 8.0.2 does not properly filter posts to be displayed, allowed unauthenticated users to access drafts/scheduled/pending posts

When was CVE-2026-4338 disclosed?

CVE-2026-4338 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on April 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-4338 actively exploited?

CVE-2026-4338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-4338?

CVE-2026-4338 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2026-4338?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4338, 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

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CVE-2026-4338

📅 Published

🔄 Last Modified

🔗 References (1)