CVE-2025-13311: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in sigalitam Just Highlight
The Just Highlight plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Highlight Color' setting in all versions up to, and including, 1.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the plugin's settings page.
AI Analysis
Technical Summary
CVE-2025-13311 is a stored cross-site scripting vulnerability (CWE-79) in the Just Highlight WordPress plugin by sigalitam, affecting all versions up to 1.0.3. The issue occurs due to improper neutralization of input in the 'Highlight Color' setting, enabling authenticated administrators to inject arbitrary web scripts. These scripts execute upon visiting the plugin's settings page, potentially impacting confidentiality and integrity. The CVSS 3.1 base score is 4.4 (AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, high attack complexity, high privileges required, no user interaction, scope changed, and low impact on confidentiality and integrity with no availability impact. No patch or remediation is currently available from the vendor.
Potential Impact
An authenticated attacker with administrator-level access can inject malicious scripts into the plugin's settings page, which execute when accessed by users. This can lead to limited confidentiality and integrity impacts within the affected WordPress environment. The vulnerability does not affect availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users should monitor the vendor's advisory channels for updates. Until a fix is released, restrict administrator access to trusted users only and consider disabling or removing the Just Highlight plugin if feasible to reduce risk.
CVE-2025-13311: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in sigalitam Just Highlight
Description
The Just Highlight plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Highlight Color' setting in all versions up to, and including, 1.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the plugin's settings page.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-13311 is a stored cross-site scripting vulnerability (CWE-79) in the Just Highlight WordPress plugin by sigalitam, affecting all versions up to 1.0.3. The issue occurs due to improper neutralization of input in the 'Highlight Color' setting, enabling authenticated administrators to inject arbitrary web scripts. These scripts execute upon visiting the plugin's settings page, potentially impacting confidentiality and integrity. The CVSS 3.1 base score is 4.4 (AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N), reflecting network attack vector, high attack complexity, high privileges required, no user interaction, scope changed, and low impact on confidentiality and integrity with no availability impact. No patch or remediation is currently available from the vendor.
Potential Impact
An authenticated attacker with administrator-level access can inject malicious scripts into the plugin's settings page, which execute when accessed by users. This can lead to limited confidentiality and integrity impacts within the affected WordPress environment. The vulnerability does not affect availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
No official patch or fix is currently available for this vulnerability. Users should monitor the vendor's advisory channels for updates. Until a fix is released, restrict administrator access to trusted users only and consider disabling or removing the Just Highlight plugin if feasible to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-11-17T14:52:21.037Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69255e28292ce6fc00be05f3
Added to database: 11/25/2025, 7:43:36 AM
Last enriched: 4/9/2026, 9:30:09 AM
Last updated: 5/10/2026, 1:48:01 PM
Views: 68
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