CVE-2025-4776
Unknown Unknown - Not Provided

Stored XSS in Phlox WordPress Theme via data-caption Attribute

Publication date: 2026-01-06

Last updated on: 2026-01-06

Assigner: Wordfence

Description
The Phlox theme for WordPress is vulnerable to Stored Cross-Site Scripting via the `data-caption` HTML attribute in all versions up to, and including, 2.17.7 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.

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Meta Information

Published
2026-01-06
Last Modified
2026-01-06
Generated
2026-07-06
AI Q&A
2026-01-06
EPSS Evaluated
2026-07-05
NVD
CVE-2025-4776
EUVD
EUVD-2026-1072

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
avertin phlox to 2.17.7 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Phlox WordPress theme up to version 2.17.7. It occurs because the theme does not properly sanitize or escape input in the `data-caption` HTML attribute. Authenticated users with Contributor-level access or higher can inject malicious scripts into pages, which then execute whenever any user views those pages.

Impact Analysis

The vulnerability allows attackers with Contributor-level access to inject arbitrary scripts into pages, which can lead to unauthorized actions such as stealing user credentials, session hijacking, or defacing the website. This compromises the security and integrity of the affected WordPress site and its users.

Mitigation Strategies

Update the Phlox WordPress theme to version 2.17.11 or later, as this version includes extensive fixes addressing the vulnerability. This update replaces the vulnerable versions up to 2.17.7 and mitigates the stored cross-site scripting issue. [1]

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