CVE-2025-5092
📋 TL;DR
This CVE describes a stored cross-site scripting (XSS) vulnerability in WordPress plugins/themes using the lightGallery library (≤2.8.3). Authenticated attackers with Contributor-level access or higher can inject malicious scripts that execute when users view compromised pages. This affects WordPress sites using vulnerable plugins or themes.
💻 Affected Systems
- WordPress plugins and themes using lightGallery library
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, deface websites, or perform actions on behalf of authenticated users.
Likely Case
Attackers with contributor access inject malicious scripts to steal admin credentials or session cookies, potentially gaining full site control.
If Mitigated
With proper input validation and output escaping, scripts are neutralized before execution, preventing exploitation.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: lightGallery library >2.8.3
Vendor Advisory: https://github.com/sachinchoolur/lightGallery
Restart Required: No
Instructions:
1. Update all WordPress plugins and themes using lightGallery. 2. Verify lightGallery version >2.8.3. 3. Test gallery functionality after update.
🔧 Temporary Workarounds
Disable vulnerable plugins/themes
allTemporarily disable affected plugins or themes until patched
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Header set Content-Security-Policy "default-src 'self'; script-src 'self'" in .htaccess or web server config
🧯 If You Can't Patch
- Restrict contributor-level access to trusted users only
- Implement web application firewall rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress plugin/theme files for lightGallery library version ≤2.8.3Check Version:
grep -r "lightGallery" wp-content/plugins/ wp-content/themes/ | grep -i versionVerify Fix Applied:
Confirm lightGallery library version >2.8.3 in updated plugins/themes📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints with script tags
- Multiple page edits by contributor-level users
Network Indicators:
- Outbound connections to suspicious domains from WordPress pages
SIEM Query:
source="wordpress" AND (method="POST" AND uri="/wp-admin/post.php" AND user_agent CONTAINS "script")🔗 References
- https://github.com/sachinchoolur/lightGallery
- https://plugins.trac.wordpress.org/changeset/3311382/
- https://plugins.trac.wordpress.org/changeset/3343557/
- https://plugins.trac.wordpress.org/changeset/3356089/
- https://plugins.trac.wordpress.org/changeset/3372141/
- https://themes.trac.wordpress.org/changeset/299860
- https://www.wordfence.com/threat-intel/vulnerabilities/id/acaa3142-2bbc-43d3-8ecc-05e8edb931ec?source=cve
