CVE-2026-4338
ActivityPub Routing < 8.0.2 - Unauthenticated Drafts/Scheduled/Pending Posts Disclosure
CVE-2026-4338 is a high vulnerability (CVSS 7.5) in Automattic Activitypub, published April 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. No source names a fixed version.
- Severity
- 7.5 HighCVSS 3.1, CVE List
- Exploit chance
- 0.36%EPSS, 30th percentile
- Exploitation
- None knownNot on CISA’s or ENISA’s lists
- Fixed in
- No fix listedNo source names one
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
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
Affected products
What each source reports
CVE List Score used
ActivityPub Routing < 8.0.2 - Unauthenticated Drafts/Scheduled/Pending Posts Disclosure
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
- Record
CVE-2026-4338- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
EUVDEUVD-2026-20058
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
- Record
EUVD-2026-20058- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-v6vj-m59r-f4gf
The ActivityPub WordPress plugin before 8.0.2 does not properly filter posts to be displayed,...
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
- Record
GHSA-v6vj-m59r-f4gf- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
NVD
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
- Record
CVE-2026-4338- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.