CVE-2021-42547 json
reflected XSS in search functionality of WP Cloud Plugins - Out-of-the-Box
published 2021-12-13 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29516
- cvss
- 4.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
Insufficient Input Validation in the search functionality of Wordpress plugin Out-of-the-Box prior to 1.20.3 allows unauthenticated user to craft a reflected Cross-Site Scripting attack.
Patch / fix
- WP Cloud Plugins Out-of-the-Box 1.20.3
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- WP Cloud Plugins Out-of-the-Box
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpcloudplugins.com
/wp-content/plugins/out-of-the-box/_documentation/index.html#releasenotes
release-notes, third-party-advisory
Sources
- CVE List CVE-2021-42547
- NVD CVE-2021-42547
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.