Security readout for executives and security teams
Plain-English summary
CVE-2026-23546 is a sensitive data exposure issue in the WordPress Classified Listing plugin by RadiusTheme, affecting versions through 5.3.4. A logged-in user may be able to retrieve sensitive embedded data. The main business risk is confidentiality loss, not site takeover or outage, based on the published scoring.
Executive priority
Treat as a near-term confidentiality risk for affected WordPress sites, especially public sites with user registration. Prioritize inventory and vendor-guided remediation, but do not treat it as confirmed actively exploited based on current sources.
Technical view
The CVE describes CWE-201: insertion of sensitive information into sent data in classified-listing. The CVSS 3.1 score is 6.5, with network access, low attack complexity, low privileges required, no user interaction, and high confidentiality impact. Integrity and availability impacts are rated none.
Likely exposure
Exposure is likely limited to WordPress sites running RadiusTheme Classified Listing up to and including 5.3.4, where an attacker can authenticate with low privileges. The provided sources do not identify specific configurations, roles, or data types exposed.
Exploitation context
CISA KEV status is false in the provided bundle, and no cited source states active exploitation. The CVSS vector indicates exploitation is remotely reachable but requires a low-privileged authenticated user. No exploit details are provided in the source bundle.
Researcher notes
Source detail is limited. The record identifies CWE-201 and version range through 5.3.4, with PR:L and C:H. It does not name exposed fields, affected endpoints, proof-of-concept availability, or a fixed version in the provided bundle. Avoid assuming exploitability beyond the CVSS vector.
Mitigation direction
- Inventory WordPress sites using the Classified Listing plugin.
- Check whether installed plugin versions are 5.3.4 or earlier.
- Review RadiusTheme, WordPress, and Patchstack guidance for a fixed version or workaround.
- Limit unnecessary low-privileged user accounts until remediation is confirmed.
- Monitor for unusual authenticated access to listing-related data.
Validation and detection
- Confirm the plugin slug is classified-listing on each WordPress site.
- Record the installed plugin version from WordPress administration or asset inventory.
- Flag versions 5.3.4 and earlier for remediation review.
- Verify whether vendor guidance identifies an upgrade or mitigation.
- Review logs for suspicious authenticated access patterns.
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-201: Information exposure and cloud metadata lookup
Information exposure and SSRF weaknesses can make discovery, cloud metadata, and credential material review relevant. 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-2026-23546 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
- 6.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
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.
Insertion of Sensitive Information Into Sent Data
Insertion of Sensitive Information Into Sent Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.