CVE-2021-25038 json
Multisite User Sync/Unsync < 2.1.2 - Reflected Cross-Site Scripting
published 2022-03-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11950
- cvss
- 6.1
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
Summary
The WordPress Multisite User Sync/Unsync WordPress plugin before 2.1.2 does not sanitise and escape the wmus_source_blog and wmus_record_per_page parameters before outputting them back in attributes, leading to Reflected Cross-Site Scripting issues
Patch / fix
- obtaininfotech multisite_user_sync/unsync 2.1.2
Exploit prediction
0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/72ccdcb9-3d24-41d7-b9fa-c8bd73d30aa6 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| 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
- Unknown WordPress Multisite User Sync/Unsync
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wpscan.com
/vulnerability/72ccdcb9-3d24-41d7-b9fa-c8bd73d30aa6
exploit, third-party-advisory
Sources
- CVE List CVE-2021-25038
- NVD CVE-2021-25038
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.