CVE-2021-24664 json
WPSchoolPress < 2.1.17 - Multiple Admin+ Stored Cross-Site Scripting
published 2021-11-08 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11576
- cvss
- 4.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.4%
- EPSS 2.4% chance of exploitation in 30 days, percentile 83%
- public exploits
- 1
- Exploit-DB
Summary
The School Management System – WPSchoolPress WordPress plugin before 2.1.17 sanitise some fields using sanitize_text_field() but does not escape them before outputting in attributes, resulting in Stored Cross-Site Scripting issues.
Patch / fix
- igexsolutions wpschoolpress 2.1.17
Timeline
- Published
- First public exploit (EDB-50520)
Exploit prediction
2.36% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-50520 WordPress Plugin WPSchoolPress 2.1.16 - 'Multiple' Cross Site Scripting (XSS) webapps, 2021-11-15
- wpscan.com https://wpscan.com/vulnerability/3f8e170c-6579-4b1a-a1ac-7d93da17b669 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- Unknown School Management System – WPSchoolPress
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/3f8e170c-6579-4b1a-a1ac-7d93da17b669
exploit, third-party-advisory
-
packetstormsecurity.com
/files/164974/WordPress-WPSchoolPress-2.1.16-Cross-Site-Scripting.html
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2021-24664
- NVD CVE-2021-24664
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.