WP-UserOnline <= 2.88.0 - Authenticated (Admin+) Stored Cross-Site Scripting
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.5epss 5.3%
from disclosure to weapon17 days
Published on NVDSep 6
1st PoC+17d
exploitation probability
5.3%top 8% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Affected products
gamerz · WP-UserOnlinepublic PoCs found — 2✓ VexDay Proof
exploitdb✓ VexDay Proofwww.exploit-db.com/exploits/51020cve_referencepacketstormsecurity.com/files/168479/wpuseronline2880-xss.txtunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/lesterchan/wp-useronline/commit/59c76b20e4e27489f93dee4ef1254d6204e08b3chttps://packetstormsecurity.com/files/168479/wpuseronline2880-xss.txthttps://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2770235%40wp-useronline&new=2770235%40wp-useronline&sfp_email=&sfph_mail=https://www.wordfence.com/threat-intel/vulnerabilities/id/5c4fb14c-de6d-4247-8f83-050f1350f6a2?source=cvehttps://www.wordfence.com/vulnerability-advisories/#CVE-2022-2941