CVE-2025-31801: WordPress MX Time Zone Clocks plugin <= 5.1.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Maksym Marko MX Time Zone Clocks mx-time-zone-clocks allows Reflected XSS.This issue affects MX Time Zone Clocks: from n/a through <= 5.1.1.
Security readout for executives and security teams
Plain-English summary
CVE-2025-31801 is a reflected cross-site scripting issue in the WordPress MX Time Zone Clocks plugin through version 5.1.1. A successful attack could let a lower-privileged attacker cause script execution in another user’s browser if that user interacts with malicious content.
Executive priority
Treat this as a moderate-priority WordPress hygiene issue. Prioritize sites with administrative users, customer portals, or broad contributor access. It is not listed as known exploited in the provided bundle, but XSS can support account abuse and content manipulation.
Technical view
The CVE describes CWE-79 improper neutralization during web page generation in mx-time-zone-clocks. CVSS 3.1 is 6.5 with network attack vector, low complexity, low privileges required, user interaction required, and changed scope with low confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress environments running the MX Time Zone Clocks plugin at version 5.1.1 or earlier. The bundle does not identify affected endpoints, parameters, install prevalence, or whether unauthenticated visitors can reach vulnerable rendering paths.
Exploitation context
The source bundle does not show CISA KEV listing or any cited active exploitation. The CVSS vector indicates exploitation requires low privileges and user interaction, so risk depends on who can trigger the vulnerable input and which users can be induced to interact.
Researcher notes
Evidence is incomplete for root cause and remediation. The bundle does not provide vulnerable parameter names, proof-of-concept details, affected code paths, or a confirmed patched version. Base analysis on version exposure, CVSS conditions, and vendor or Patchstack updates.
Mitigation direction
Inventory WordPress sites for the MX Time Zone Clocks plugin.
Identify any installs at version 5.1.1 or earlier.
Check vendor and Patchstack guidance for a fixed version or advisory update.
Update when a vendor-supported fixed version is confirmed.
Disable or remove the plugin if no supported fix is available.
Validation and detection
Verify installed plugin versions from WordPress administration or asset inventory.
Confirm whether mx-time-zone-clocks is present on public or internal WordPress sites.
Run an authorized vulnerability scanner check for CVE-2025-31801.
Review web logs for unusual requests targeting plugin-rendered pages.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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 · medium confidence lookup
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.
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.
We 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.
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
CWE-79 · source CWE mapping
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.