CVE-2022-2473 json
WP-UserOnline <= 2.87.6 - Authenticated (Admin+) Stored Cross-Site Scripting
published 2022-09-06 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34732
- cvss
- 5.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
The WP-UserOnline plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘templates[browsingpage][text]' parameter in versions up to, and including, 2.87.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrative capabilities and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The only affects multi-site installations and installations where unfiltered_html is disabled.
Patch / fix
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.38% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- youtu.be https://youtu.be/Q3zInrUnAV0 referenced PoC, tagged "exploit" by a source, unverified
- packetstormsecurity.com https://packetstormsecurity.com/files/167864/wpuseronline2876-xss.txt referenced PoC, tagged "exploit" by a source, unverified
- exploitalert.com https://www.exploitalert.com/view-details.html?id=38893 referenced PoC, tagged "exploit" by a source, unverified
- exploitalert.com https://www.exploitalert.com/view-details.html?id=38912 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
-
plugins.trac.wordpress.org
/changeset?sfp_email=&sfph_mail=&reponame=&old=2758412%40wp-useronline&new=2758412%40wp-useronline&sfp_email=&
patch
-
youtu.be
/Q3zInrUnAV0
exploit
-
packetstormsecurity.com
/files/167864/wpuseronline2876-xss.txt
exploit, third-party-advisory, vdb-entry
-
exploitalert.com
/view-details.html?id=38893
exploit, third-party-advisory
-
exploitalert.com
/view-details.html?id=38912
exploit, third-party-advisory
-
wordfence.com
/threat-intel/vulnerabilities/id/6a44a55e-a96a-4698-9948-6ef33138a834?source=cve
third-party-advisory
-
wordfence.com
/vulnerability-advisories/#CVE-2022-2473
third-party-advisory
-
exploit-db.com
/exploits/50988
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2022-2473
- NVD CVE-2022-2473
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.