CVE-2025-27006

6.5 MEDIUM

📋 TL;DR

This stored cross-site scripting (XSS) vulnerability in the Authorsy WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. The vulnerability affects all versions up to 1.0.5 of the Authorsy plugin, potentially compromising any WordPress site using this plugin.

💻 Affected Systems

Products:
  • Authorsy WordPress Plugin
Versions: n/a through 1.0.5
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All WordPress installations using Authorsy plugin versions 1.0.5 or earlier are vulnerable by default.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal administrator session cookies, perform actions as authenticated users, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise.

🟠

Likely Case

Attackers inject malicious JavaScript that steals user session cookies or credentials when users visit compromised pages, leading to account takeover.

🟢

If Mitigated

With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing execution.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires finding and leveraging the specific input vector where sanitization is missing. No public exploit code is currently available.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version after 1.0.5

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/authorsy/vulnerability/wordpress-authorsy-plugin-1-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Authorsy plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin until patched version is released.

🔧 Temporary Workarounds

Disable Authorsy Plugin

WordPress

Temporarily disable the vulnerable plugin until patched version is available

wp plugin deactivate authorsy

Implement WAF Rules

all

Configure web application firewall to block XSS payloads targeting Authorsy endpoints

🧯 If You Can't Patch

  • Implement Content Security Policy (CSP) headers to restrict script execution
  • Enable WordPress security plugins with XSS protection features

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for Authorsy version. If version is 1.0.5 or earlier, you are vulnerable.

Check Version:

wp plugin get authorsy --field=version

Verify Fix Applied:

After updating, verify Authorsy plugin version is higher than 1.0.5 in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to Authorsy plugin endpoints
  • JavaScript payloads in request parameters
  • Multiple failed XSS attempts

Network Indicators:

  • HTTP requests containing script tags or JavaScript in parameters targeting Authorsy endpoints

SIEM Query:

source="wordpress.log" AND ("authorsy" OR "wp-content/plugins/authorsy") AND ("<script" OR "javascript:" OR "onload=" OR "onerror=")

🔗 References

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