CVE-2022-2941 json
WP-UserOnline <= 2.88.0 - Authenticated (Admin+) Stored Cross-Site Scripting
published 2022-09-06 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-35162
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.8%
- EPSS 7.8% chance of exploitation in 30 days, percentile 94%
- public exploits
- 1
- Exploit-DB
Summary
The WP-UserOnline plugin for WordPress has multiple Stored Cross-Site Scripting vulnerabilities in versions up to, and including 2.88.0. This is due to the fact that all fields in the "Naming Conventions" section do not properly sanitize user input, nor escape it on output. This makes it possible for authenticated attackers, with administrative privileges, to inject JavaScript code into the setting that will execute whenever a user accesses the injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Patch / fix
- wp-useronline_project wp-useronline 2.88.1
Timeline
- Published
- First public exploit (EDB-51020)
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
7.78% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-51020 Wordpress Plugin WP-UserOnline 2.88.0 - Stored Cross Site Scripting (XSS) webapps, 2022-09-23
- packetstormsecurity.com https://packetstormsecurity.com/files/168479/wpuseronline2880-xss.txt referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.5 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N |
Affected products
- gamerz WP-UserOnline
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
github.com
/lesterchan/wp-useronline/commit/59c76b20e4e27489f93dee4ef1254d6204e08b3c
patch
-
plugins.trac.wordpress.org
/changeset?sfp_email=&sfph_mail=&reponame=&old=2770235%40wp-useronline&new=2770235%40wp-useronline&sfp_email=&
patch
-
packetstormsecurity.com
/files/168479/wpuseronline2880-xss.txt
exploit, third-party-advisory, vdb-entry
-
wordfence.com
/threat-intel/vulnerabilities/id/5c4fb14c-de6d-4247-8f83-050f1350f6a2?source=cve
third-party-advisory
-
wordfence.com
/vulnerability-advisories/#CVE-2022-2941
third-party-advisory
Sources
- CVE List CVE-2022-2941
- NVD CVE-2022-2941
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.