Security readout for executives and security teams
Plain-English summary
CVE-2021-24342 is a reflected cross-site scripting issue in the JNews WordPress theme before 8.0.6. A vulnerable site could reflect attacker-controlled script content through an AJAX request parameter. Business risk is mainly account compromise or unauthorized actions if a privileged user is tricked into interacting with malicious content.
Executive priority
Prioritize remediation for public WordPress sites using JNews, especially where administrators regularly access the site. This is not evidenced as actively exploited here, but reflected XSS can become serious when it reaches privileged users.
Technical view
The issue is CWE-79 in JNews before 8.0.6. Public sources state the theme did not sanitize the cat_id parameter in POST requests to /?ajax-request=jnews when using jnews_build_mega_category_* actions, enabling reflected XSS. No CVSS score is provided in the supplied bundle.
Likely exposure
Exposure is limited to WordPress sites running the JNews theme before version 8.0.6. Sites not using JNews, or already on 8.0.6 or later, are not indicated as affected by the supplied sources.
Exploitation context
The supplied sources describe the vulnerable parameter and request context, but do not establish active exploitation. The CVE is not listed as KEV in the provided bundle. Treat exploitation as plausible for exposed vulnerable sites, but not confirmed from these sources.
Researcher notes
The evidence is narrow but clear: unsanitized cat_id in the JNews AJAX mega category action path before 8.0.6. The bundle lacks CVSS, exploit maturity, and vendor-specific mitigation detail beyond the fixed-version boundary.
Mitigation direction
- Upgrade the JNews WordPress theme to version 8.0.6 or later.
- Check the theme vendor and WPScan advisory for current remediation guidance.
- Remove or disable the vulnerable theme if upgrading is not immediately possible.
- Review WordPress administrator exposure and avoid using privileged sessions on untrusted links.
Validation and detection
- Inventory WordPress sites using the JNews theme.
- Confirm the installed JNews version is 8.0.6 or later.
- Check whether affected AJAX mega category functionality is present.
- Review web logs for suspicious requests to /?ajax-request=jnews.
- Document remediation status for each affected WordPress site.
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-2021-24342 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/415ca763-fe65-48cb-acd3-b375a400217eCVE reference · x_refsource_CONFIRM
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.