CVE-2025-26896
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by PiwigoPress, a WordPress plugin, leading to stored cross-site scripting (XSS). It affects all versions up to 2.33, potentially compromising users who view the affected pages, such as administrators or visitors, by stealing cookies or performing unauthorized actions.
💻 Affected Systems
- PiwigoPress WordPress plugin
⚠️ 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
An attacker could steal administrator session cookies, take over the WordPress site, deface content, or redirect users to malicious sites, leading to full site compromise and data theft.
Likely Case
Attackers inject malicious scripts to steal user cookies or session tokens, potentially gaining unauthorized access to user accounts or performing actions on their behalf.
If Mitigated
With proper input validation and output encoding, the risk is reduced to minimal, preventing script execution and limiting impact to minor data exposure.
🎯 Exploit Status
Exploitation likely requires some level of user interaction or access to input fields, but details are not publicly disclosed; stored XSS typically has low complexity once the injection point is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.33 (check for updates in WordPress plugin repository)
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find PiwigoPress and click 'Update Now' if available. 4. Alternatively, download the latest version from the WordPress plugin repository and upload it manually.
🔧 Temporary Workarounds
Disable PiwigoPress plugin
allTemporarily deactivate the plugin to prevent exploitation until a patch is applied.
wp plugin deactivate piwigopress
Implement Content Security Policy (CSP)
allAdd a CSP header to restrict script execution, reducing the impact of XSS attacks.
Add 'Content-Security-Policy: default-src 'self'; script-src 'self'' to web server configuration
🧯 If You Can't Patch
- Restrict access to the WordPress admin panel and affected pages using IP whitelisting or authentication.
- Monitor web server logs for unusual input patterns or script injection attempts and block malicious IPs.
🔍 How to Verify
Check if Vulnerable:
Check the PiwigoPress plugin version in WordPress admin under Plugins > Installed Plugins; if version is 2.33 or lower, it is vulnerable.Check Version:
wp plugin get piwigopress --field=versionVerify Fix Applied:
After updating, verify the plugin version is above 2.33 and test input fields for script injection by attempting to inject a harmless payload like <script>alert('test')</script> and ensuring it is properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests with script tags or JavaScript code in input fields to PiwigoPress pages
- Errors related to script execution in web server logs
Network Indicators:
- HTTP requests containing malicious script payloads targeting the plugin endpoints
- Unexpected outbound connections from the site to external domains
SIEM Query:
source="web_server_logs" AND (url_path="/wp-content/plugins/piwigopress/" AND (message="*<script>*" OR message="*javascript:*"))