CVE-2021-24357 json
FooGallery < 2.0.35 - Authenticated Stored Cross-Site Scripting
published 2021-06-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11270
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 50%
- public exploits
- 0
- none known
Summary
In the Best Image Gallery & Responsive Photo Gallery – FooGallery WordPress plugin before 2.0.35, the Custom CSS field of each gallery is not properly sanitised or validated before being being output in the page where the gallery is embed, leading to a stored Cross-Site Scripting issue.
Patch / fix
- fooplugins foogallery 2.0.35
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/950f46ae-4476-4969-863a-0e55752953b3 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 |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Affected products
- FooPlugins Best Image Gallery & Responsive Photo Gallery – FooGallery
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/950f46ae-4476-4969-863a-0e55752953b3
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24357
- NVD CVE-2021-24357
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.