CVE-2026-4338

| EUVD-2026-20058 HIGH
2026-04-08 WPScan GHSA-v6vj-m59r-f4gf
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
PoC Detected
Apr 08, 2026 - 21:26 vuln.today
Public exploit code
Analysis Generated
Apr 08, 2026 - 06:30 vuln.today
EUVD ID Assigned
Apr 08, 2026 - 06:30 euvd
EUVD-2026-20058
CVE Published
Apr 08, 2026 - 06:00 nvd
HIGH 7.5

Tags

WordPress Information Disclosure

Description

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

Analysis

Improper access control in the ActivityPub WordPress plugin before 8.0.2 exposes draft, scheduled, and pending posts to unauthenticated remote users, resulting in confidentiality breach. This information disclosure vulnerability (CVSS 7.5) allows network-based attackers to access unpublished content without authentication or user interaction. …

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Remediation

Within 24 hours: Inventory all WordPress installations running ActivityPub plugin and identify current version numbers. Within 7 days: Contact plugin vendor for patched version availability timeline; as interim measure, restrict ActivityPub API endpoints via Web Application Firewall (WAF) rules or disable plugin if non-critical. …

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Priority Score

58
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +38
POC: +20

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CVE-2026-4338 vulnerability details – vuln.today
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