CVE-2025-5699: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in gsaraiva Developer Formatter
The Developer Formatter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Custom CSS in all versions up to, and including, 2015.0.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI Analysis
Technical Summary
CVE-2025-5699 is a stored cross-site scripting vulnerability (CWE-79) in the Developer Formatter WordPress plugin by gsaraiva. It affects all versions up to and including 2015.0.2.1. The vulnerability occurs due to improper neutralization of input in the Custom CSS feature, enabling authenticated administrators to inject arbitrary scripts that execute in the context of users visiting the injected pages. This vulnerability is limited to multi-site WordPress installations with unfiltered_html disabled. The CVSS 3.1 base score is 5.5 (AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N), indicating medium severity.
Potential Impact
An attacker with administrator-level access on a multi-site WordPress installation can exploit this vulnerability to inject persistent malicious scripts via the Custom CSS feature. These scripts execute in the browsers of users who visit the affected pages, potentially leading to limited confidentiality and integrity impacts. There is no direct availability impact. The vulnerability does not affect single-site installations or those with unfiltered_html enabled.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or patch links are provided. Users should check the vendor advisory or plugin updates for remediation guidance. Until a patch is available, restrict administrator access to trusted users and consider disabling or limiting use of the Developer Formatter plugin in multi-site environments where unfiltered_html is disabled. Monitor vendor channels for updates.
CVE-2025-5699: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in gsaraiva Developer Formatter
Description
The Developer Formatter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Custom CSS in all versions up to, and including, 2015.0.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-5699 is a stored cross-site scripting vulnerability (CWE-79) in the Developer Formatter WordPress plugin by gsaraiva. It affects all versions up to and including 2015.0.2.1. The vulnerability occurs due to improper neutralization of input in the Custom CSS feature, enabling authenticated administrators to inject arbitrary scripts that execute in the context of users visiting the injected pages. This vulnerability is limited to multi-site WordPress installations with unfiltered_html disabled. The CVSS 3.1 base score is 5.5 (AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N), indicating medium severity.
Potential Impact
An attacker with administrator-level access on a multi-site WordPress installation can exploit this vulnerability to inject persistent malicious scripts via the Custom CSS feature. These scripts execute in the browsers of users who visit the affected pages, potentially leading to limited confidentiality and integrity impacts. There is no direct availability impact. The vulnerability does not affect single-site installations or those with unfiltered_html enabled.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or patch links are provided. Users should check the vendor advisory or plugin updates for remediation guidance. Until a patch is available, restrict administrator access to trusted users and consider disabling or limiting use of the Developer Formatter plugin in multi-site environments where unfiltered_html is disabled. Monitor vendor channels for updates.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-06-04T20:37:32.506Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 68429199182aa0cae20492f8
Added to database: 6/6/2025, 6:58:33 AM
Last enriched: 4/9/2026, 5:36:49 PM
Last updated: 5/10/2026, 4:11:32 AM
Views: 81
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