WordPress ActivityPub plugin <= 1.0.5 - Unauthenticated Broken Access Control vulnerability
Priority LOW 35CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
Missing Authorization vulnerability in Matthias Pfefferle & Automattic ActivityPub.This issue affects ActivityPub: from n/a through 1.0.5.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00349 28th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Matthias Pfefferle & Automattic | ActivityPub | up to 1.0.5 | — | No fix listed | CNA |
- ActivityPub VendorMatthias Pfefferle & Automattic Affected up to 1.0.5 Fixed in — No fix listed CNA
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:automattic:activitypub:*:*:*:*:*:wordpress:*:* | — | — | Automattic |
- cpe:2.3:a:automattic:activitypub:*:*:*:*:*:wordpress:*:* Versions — — ·Automattic
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-52199
- 2026-10-03 Alias added: GHSA-5cg4-pm73-p483
Sources
- CVE-2023-52199 · CVE Program
- CVE-2023-52199 · NVD
- FIRST EPSS
- GHSA-5cg4-pm73-p483 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences