Security readout for executives and security teams
Plain-English summary
CVE-2022-2941 lets a WordPress administrator store JavaScript in WP-UserOnline settings. The script can run when users view affected plugin pages. Business risk is limited by the need for administrator access and the narrow affected configurations, but compromised or delegated admin accounts could turn this into persistent site-side abuse.
Executive priority
Treat as a moderate priority cleanup for affected WordPress estates. Patch during the next maintenance window, sooner if many administrators exist, admin accounts are shared, or the plugin runs on public-facing multisite environments.
Technical view
WP-UserOnline through 2.88.0 has stored XSS in all fields in the Naming Conventions settings section. Input is not properly sanitized and output is not escaped. The CVSS 3.1 score is 5.5 with PR:H, scope changed, and low confidentiality and integrity impact.
Likely exposure
Exposure is mainly WordPress sites using WP-UserOnline <= 2.88.0 on multisite deployments or where unfiltered_html is disabled. Single-site installs with normal administrator unfiltered HTML behavior appear outside the stated affected conditions.
Exploitation context
The CVE is not listed as KEV, so the provided sources do not support active exploitation. Packet Storm is listed as a public reference, which indicates public exploit information exists, but this does not prove in-the-wild abuse.
Researcher notes
The vulnerability is administrator-authenticated stored XSS, not unauthenticated site compromise. The interesting validation points are configuration gating, settings sanitization, and output escaping. Evidence does not identify active exploitation or a named fixed version in the provided bundle.
Mitigation direction
- Inventory WordPress sites for WP-UserOnline and installed plugin version.
- Apply the vendor update containing the linked GitHub or WordPress.org fix.
- If no patched update is available, disable or remove the plugin.
- Restrict WordPress administrator access and review delegated admin roles.
- Check vendor guidance before relying on configuration-only mitigations.
Validation and detection
- Confirm whether WP-UserOnline is installed and at or below 2.88.0.
- Check whether the site is multisite or has unfiltered_html disabled.
- Review Naming Conventions settings for unexpected script-like content.
- Verify updated code sanitizes settings input and escapes output.
- Test as a non-offensive regression that saved settings render inertly.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-2941 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5c4fb14c-de6d-4247-8f83-050f1350f6a2?source=cveCVE reference
- https://github.com/lesterchan/wp-useronline/commit/59c76b20e4e27489f93dee4ef1254d6204e08b3cCVE reference
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2770235%40wp-useronline&new=2770235%40wp-useronline&sfp_email=&sfph_mail=CVE reference
- https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2941CVE reference
- https://packetstormsecurity.com/files/168479/wpuseronline2880-xss.txtCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.