CVE-2025-8777

Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-09-30

Last updated on: 2025-10-02

Assigner: Wordfence

Description

The planetcalc plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘language’ parameter in all versions up to, and including, 2.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2025-09-30

Last Modified

2025-10-02

Generated

2026-07-06

AI Q&A

2025-09-30

EPSS Evaluated

2026-07-05

NVD

CVE-2025-8777

EUVD

EUVD-2025-31675

Affected Vendors & Products

Vendor	Product	Version / Range
wordpress	planetcalc	2.2

Helpful Resources

Exploitability

CWE

KEV

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

Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the planetcalc WordPress plugin up to version 2.2. It occurs because the plugin does not properly sanitize or escape the 'language' parameter input. Authenticated users with Contributor-level access or higher can inject malicious scripts into pages, which then execute whenever other users view those pages.

Impact Analysis

The vulnerability allows attackers with Contributor-level access or above to inject arbitrary web scripts into pages. This can lead to unauthorized actions such as stealing user credentials, session hijacking, defacing websites, or spreading malware to users who visit the affected pages.

Mitigation Strategies

Since the planetcalc plugin version 2.2 and earlier is vulnerable, immediate mitigation steps include disabling or uninstalling the planetcalc plugin until a secure update or patch is released. Additionally, restrict Contributor-level access to trusted users only to reduce risk of exploitation. Monitor for plugin updates or official patches from the developers before re-enabling the plugin. [1]

Hi! I’m here to help you understand CVE-2025-8777. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70