CVE-2021-24837 json
Passster < 3.5.5.8 - Contributor+ Stored Cross-Site Scripting
published 2023-01-23 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11749
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 34%
- public exploits
- 0
- none known
Summary
The Passster WordPress plugin before 3.5.5.8 does not escape the area parameter of its shortcode, which could allow users with a role as low as Contributor to perform Cross-Site Scripting attacks.
Patch / fix
- Unknown Passster 3.5.5.8
Exploit prediction
0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/5fea3ac3-d599-41f3-8f76-08f0d3552af1 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 Passster
Classification
- Technology feeds
References
-
wpscan.com
/vulnerability/5fea3ac3-d599-41f3-8f76-08f0d3552af1
exploit, vdb-entry, technical-description, third-party-advisory
Sources
- CVE List CVE-2021-24837
- NVD CVE-2021-24837
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.