CVE-2023-5057 json
ActivityPub for WordPress < 1.0.0 - Contributor+ Stored XSS
published 2023-10-16 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57400
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 42%
- public exploits
- 0
- none known
Summary
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 perform Stored XSS attacks
Patch / fix
- Unknown ActivityPub 1.0.0
Exploit prediction
0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/58a63507-f0fd-46f1-a80c-6b1c41dddcf5 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected products
- Unknown ActivityPub
Classification
- Technology feeds
References
-
wpscan.com
/vulnerability/58a63507-f0fd-46f1-a80c-6b1c41dddcf5
exploit, vdb-entry, technical-description, third-party-advisory
Sources
- CVE List CVE-2023-5057
- NVD CVE-2023-5057
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.