CVE-2025-8482
📋 TL;DR
The Simple Local Avatars WordPress plugin version 2.8.4 has an authorization vulnerability that allows authenticated users (even subscribers) to modify avatar metadata for all users. This occurs due to a missing capability check in the migrate_from_wp_user_avatar() function. Any WordPress site using this vulnerable plugin version is affected.
💻 Affected Systems
- Simple Local Avatars 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 systematically modify avatar metadata for all users, potentially causing service disruption, user confusion, or enabling further attacks through manipulated metadata.
Likely Case
Malicious users could tamper with other users' avatar settings, causing minor disruptions or confusion among site members.
If Mitigated
With proper user role management and monitoring, impact is limited to minor metadata manipulation that can be detected and reverted.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once authenticated. No special tools or advanced knowledge needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 2.8.5 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Simple Local Avatars and click 'Update Now'. 4. Alternatively, download latest version from WordPress plugin repository and manually update.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
WordPressDisable the vulnerable plugin until patched
wp plugin deactivate simple-local-avatars
Restrict User Registration
WordPressTemporarily disable new user registration to limit attack surface
Settings → General → Membership: Uncheck 'Anyone can register'
🧯 If You Can't Patch
- Remove the plugin entirely if updating isn't possible
- Implement strict user role management and monitor for suspicious avatar metadata changes
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Simple Local Avatars → Version. If version is exactly 2.8.4, you are vulnerable.Check Version:
wp plugin get simple-local-avatars --field=versionVerify Fix Applied:
After updating, verify version shows 2.8.5 or higher in WordPress admin plugins page.📡 Detection & Monitoring
Log Indicators:
- Unusual avatar metadata modification events
- Multiple user avatar changes from single account in short timeframe
- Subscriber-level users performing administrative avatar functions
Network Indicators:
- POST requests to avatar migration endpoints from non-admin users
SIEM Query:
source="wordpress" AND (event="avatar_migration" OR event="avatar_update") AND user_role="subscriber"🔗 References
- https://plugins.trac.wordpress.org/browser/simple-local-avatars/tags/2.8.4/includes/class-simple-local-avatars.php#L123
- https://plugins.trac.wordpress.org/browser/simple-local-avatars/tags/2.8.4/includes/class-simple-local-avatars.php?marks=1663-1672#L1663
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3340223%40simple-local-avatars&new=3340223%40simple-local-avatars&sfp_email=&sfph_mail=
- https://www.wordfence.com/threat-intel/vulnerabilities/id/69d78334-2b38-43ee-acf6-c073d5826213?source=cve
