CVE-2025-31435
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the WordPress Microblog Poster plugin allows attackers to perform unauthorized actions as authenticated users, leading to stored cross-site scripting (XSS). This affects WordPress sites using Microblog Poster versions up to 2.1.6. Attackers can inject malicious scripts that execute in victims' browsers when they visit compromised pages.
💻 Affected Systems
- WordPress Microblog Poster 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
Attackers could inject persistent malicious scripts that steal administrator credentials, deface websites, redirect visitors to malicious sites, or install backdoors for further compromise.
Likely Case
Attackers inject malicious JavaScript that steals session cookies or performs unauthorized actions on behalf of authenticated users, potentially leading to account takeover or content manipulation.
If Mitigated
With proper CSRF protections and input validation, the attack surface is reduced, but the vulnerability still exists in unpatched versions.
🎯 Exploit Status
Exploitation requires tricking authenticated users into visiting malicious pages while logged in. The CSRF leads to stored XSS payload injection.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.7 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Microblog Poster and click 'Update Now' if available. 4. Alternatively, download version 2.1.7+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Temporary plugin deactivation
allDisable the Microblog Poster plugin until patched to prevent exploitation.
wp plugin deactivate microblog-poster
Implement CSRF tokens manually
allAdd nonce verification to plugin forms if you have development capabilities.
🧯 If You Can't Patch
- Disable the Microblog Poster plugin completely.
- Implement web application firewall (WAF) rules to block suspicious POST requests to plugin endpoints.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Microblog Poster version. If version is 2.1.6 or earlier, you are vulnerable.Check Version:
wp plugin get microblog-poster --field=versionVerify Fix Applied:
Verify Microblog Poster version is 2.1.7 or later in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php or plugin-specific endpoints
- JavaScript injection patterns in plugin-related database entries
Network Indicators:
- Unexpected outbound connections from WordPress site after visiting specific pages
- Suspicious referrer headers in requests to plugin endpoints
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "microblog") AND http_method="POST" AND status_code=200