CVE-2025-5559
BaseFortify
Publication date: 2025-06-26
Last updated on: 2025-07-16
Assigner: Wordfence
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| bernhard-riedl | timezonecalculator | to 3.37 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in the TimeZoneCalculator WordPress plugin is a Stored Cross-Site Scripting (XSS) issue. It occurs because the plugin does not properly sanitize or escape user-supplied attributes in its 'timezonecalculator_output' shortcode. This allows authenticated users with contributor-level access or higher to inject malicious scripts into pages. These scripts then execute whenever any user views the infected page.
How can this vulnerability impact me? :
This vulnerability can allow attackers with contributor-level access to inject malicious scripts into website pages, potentially leading to unauthorized actions such as stealing user credentials, hijacking user sessions, defacing the website, or spreading malware to visitors. Since the scripts execute in the context of the website, it can compromise the security and trustworthiness of the affected site.
How can this vulnerability be detected on my network or system? Can you suggest some commands?
To detect this vulnerability, you can scan your WordPress installation for the presence of the TimeZoneCalculator plugin version 3.37 or earlier. Additionally, review pages or posts that use the 'timezonecalculator_output' shortcode for suspicious or unexpected script injections. Since the vulnerability involves stored cross-site scripting via shortcode attributes, inspecting the database entries or post content for injected scripts related to this shortcode can help. There are no specific commands provided in the resources, but general WordPress plugin version checks and content audits are recommended. [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include disabling or removing the TimeZoneCalculator plugin from your WordPress installation, especially since it has been temporarily closed and removed from download pending a security review. Restrict contributor-level and higher users from adding or editing content that uses the 'timezonecalculator_output' shortcode until a patched version is available. Monitor your site for any suspicious activity related to script injections and consider implementing additional input sanitization or output escaping measures if possible. [1]