Security readout for executives and security teams
Plain-English summary
This is a stored cross-site scripting issue in the Contextual Related Posts WordPress plugin before 3.3.1. A contributor-level user could save unsafe block options that later run in another visitor's browser when the affected post or page is viewed.
Executive priority
Prioritize routine patching, with faster action for sites allowing many contributor-level users or untrusted content creators. Business risk is mainly visitor session exposure, content tampering, and reputational harm from malicious script execution.
Technical view
The plugin failed to validate and escape some block options before rendering them in embedded pages or posts. The required privileges are low, user interaction is required, scope changes, and CVSS 3.1 is 5.4. The weakness maps to CWE-79.
Likely exposure
Exposure is limited to WordPress sites running Contextual Related Posts before 3.3.1, especially where contributor, author, or higher accounts can edit posts using the plugin block.
Exploitation context
The source bundle includes a WPScan vulnerability entry tagged as exploit, but it does not show CISA KEV listing or confirmed active exploitation. Treat public technical details as increasing risk, not proof of in-the-wild compromise.
Researcher notes
The affected-version evidence is strongest in the title and description: before 3.3.1. The affected metadata lists vendor as unknown and version as 0, so confirm against plugin inventory and vendor advisory data before broad reporting.
Mitigation direction
- Upgrade Contextual Related Posts to version 3.3.1 or later.
- Restrict contributor and author publishing privileges until affected sites are updated.
- Review vendor and WPScan guidance for any plugin-specific cleanup advice.
- Audit affected posts and pages for unexpected injected content.
Validation and detection
- Inventory WordPress sites for the Contextual Related Posts plugin.
- Confirm installed plugin versions are 3.3.1 or newer.
- Review contributor-level and higher accounts for unnecessary access.
- Check recent edits to posts or pages using the plugin block.
- Review security logs for XSS indicators around affected content.
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-2023-0252 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/5754a4fd-1adf-47aa-976f-3b28750058c2CVE reference · exploit, vdb-entry
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.