CVE-2025-4776

Phlox <= 2.17.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via `data-caption` HTML Attribute

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.

We have discovered 5,707 live websites that are affected by CVE-2025-4776.

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Affected Software

Product  Phlox
Category Wordpress Themes
Vulnerable Domains5,707 live websites (76% of Phlox install base)
Vulnerable Versions
  • from 0 through 2.17.7
Vulnerable Versions Count97 versions ( 99% of all versions)


Common Weakness Enumeration

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')



Details

  • Published - Jan 6, 2026
  • Updated - Jan 6, 2026

Credits

  • Craig Smith (finder)

Website Distribution by Country

Number of websites using CVE-2025-4776
United States1,162 websites


Germany822 websites
Poland305 websites
Italy303 websites
Netherlands273 websites
France255 websites
Brazil220 websites
GB211 websites
India169 websites
Spain151 websites

Website Distribution by TLD

Number of websites using CVE-2025-4776
.com2,194 websites
.de328 websites
.nl248 websites
.org237 websites
.pl233 websites
.it223 websites
.com.br205 websites
.net136 websites
.fr123 websites
.ru115 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2025-4776

Top websites that are affected by CVE-2025-4776. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
*********.net Germany***,***
**************.com United States***,***
************.**.uk GB***,***
**********************.com Germany***,***
*****.com Germany***,***
*************.com United States***,***
*************.com United States***,***
********.net GB***,***
**********.**.uk GB***,***
*******.pl Poland***,***
See full domain list

FAQ

CVE-2025-4776 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Phlox
A total of 5,707 websites have been identified as vulnerable to CVE-2025-4776, based on global website indexing conducted by WebTechSurvey.
The Phlox is affected by the CVE-2025-4776 vulnerability.
Phlox versions up to and including 2.17.7 are vulnerable to CVE-2025-4776.