Activitypub
Vendor:
First CVE: Oct 16, 2023 · Active for 2 years
5
Total CVEs
More Total CVEs than 79% of tracked products
2.5
Avg CVEs / Year
Higher CVE frequency than 77% of tracked products
5.4
Avg CVSS
Higher Avg CVSS than 13% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Activitypub over time
Volume of CVEsAvg CVSS Base Score
First CVE
Oct 16, 2023
2 years ago
Most Recent CVE
Apr 8, 2026
110 days ago
CVE Severity & Scoring
Activitypub5 CVEs
80%
20%
All CVEs352,785 CVEs
45%
40%
11%
MediumHigh
Attack Vector
Local0 (0.0%)
Network5 (100.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low5 (100.0%)
High0 (0.0%)
Unknown0 (0.0%)
User Interaction
None3 (60.0%)
Unknown0 (0.0%)
Required2 (40.0%)
Privileges Required
Low4 (80.0%)
High0 (0.0%)
None1 (20.0%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (5 CVEs).
5 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-4338HIGH 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 | Apr 8, 2026 | 7.5 | 27 | NO | NO |
CVE-2023-5057MEDIUM The ActivityPub WordPress plugin before 1.0.0 does not escape user metadata before outputting them in mentions, which could allow users with a role of Contributor and above to perf | Oct 16, 2023 | 5.4 | 19 | NO | NO |
CVE-2023-3707MEDIUM The ActivityPub WordPress plugin before 1.0.0 does not ensure that post contents to be displayed are public and belong to the plugin, allowing any authenticated user, such as subsc | Oct 16, 2023 | 4.3 | 17 | NO | NO |
CVE-2023-3706MEDIUM The ActivityPub WordPress plugin before 1.0.0 does not ensure that post titles to be displayed are public and belong to the plugin, allowing any authenticated user, such as subscri | Oct 16, 2023 | 4.3 | 17 | NO | NO |
CVE-2023-3746MEDIUM The ActivityPub WordPress plugin before 1.0.0 does not sanitize and escape some data from post content, which could allow contributor and above role to perform Stored Cross-Site Sc | Oct 16, 2023 | 5.4 | 15 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (5 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (5 CVEs).
Media Mentions
Signals from CVEs in this product scope (5 CVEs).
Top CNAs Publishing CVEs For Activitypub
Versions
No cataloged versions.