CVE-2026-4338: CWE-200 Information Exposure in ActivityPub
CVE-2026-4338 is a high-severity information exposure vulnerability in the ActivityPub WordPress plugin versions before 8. 0. 2. The plugin does not properly filter posts, allowing unauthenticated users to access drafts, scheduled, and pending posts that should not be publicly visible.
AI Analysis
Technical Summary
The ActivityPub WordPress plugin prior to version 8.0.2 fails to correctly restrict access to certain post states such as drafts, scheduled, and pending posts. This improper filtering leads to an information disclosure vulnerability (CWE-200), enabling unauthenticated users to view content that is not intended for public access. The CVSS 3.1 base score is 7.5, reflecting a network attack vector with no privileges or user interaction required, and a high impact on confidentiality.
Potential Impact
Unauthenticated attackers can access unpublished content including drafts, scheduled, and pending posts. This exposure can lead to leakage of sensitive or confidential information that site administrators intended to keep private. There is no impact on integrity or availability reported.
Mitigation Recommendations
No official patch or remediation level is currently confirmed. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the plugin or disable it if possible to prevent unauthorized access to unpublished posts.
CVE-2026-4338: CWE-200 Information Exposure in ActivityPub
Description
CVE-2026-4338 is a high-severity information exposure vulnerability in the ActivityPub WordPress plugin versions before 8. 0. 2. The plugin does not properly filter posts, allowing unauthenticated users to access drafts, scheduled, and pending posts that should not be publicly visible.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The ActivityPub WordPress plugin prior to version 8.0.2 fails to correctly restrict access to certain post states such as drafts, scheduled, and pending posts. This improper filtering leads to an information disclosure vulnerability (CWE-200), enabling unauthenticated users to view content that is not intended for public access. The CVSS 3.1 base score is 7.5, reflecting a network attack vector with no privileges or user interaction required, and a high impact on confidentiality.
Potential Impact
Unauthenticated attackers can access unpublished content including drafts, scheduled, and pending posts. This exposure can lead to leakage of sensitive or confidential information that site administrators intended to keep private. There is no impact on integrity or availability reported.
Mitigation Recommendations
No official patch or remediation level is currently confirmed. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the plugin or disable it if possible to prevent unauthorized access to unpublished posts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-03-17T14:54:23.077Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d5f7631cc7ad14da1ac467
Added to database: 4/8/2026, 6:36:19 AM
Last enriched: 4/15/2026, 3:53:26 PM
Last updated: 5/23/2026, 7:05:23 PM
Views: 71
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