Ad Inserter <= 1.5.5 — Cross-Site Request Forgery to Cross-Site Scripting
427c29e6-9bbe-4094-a2a2-46945525f5b3Published · Updated Action summary
Affected: ≤1.5.5Update to 1.5.6 or newer
All remediation steps- Severity
- Medium4.8
- CVSS
- 4.8CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:HPrivileges required- High
UI:RUser interaction- Required
S:CScope- Changed
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-79 Cross-Site Scripting
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Ad Inserter – Ad Manager & AdSense Ads ad-inserter
- Affected≤ 1.5.5
- Patched in1.5.6
Update to 1.5.6 or newer.
You are affected if you run ≤ 1.5.5. Version 1.5.6 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Ad Inserter – Ad Manager & AdSense Ads.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 1.5.6, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Ad Inserter – Ad Manager & AdSense Ads to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Marcin Probola.
The Ad Inserter plugin for WordPress is vulnerable to Cross-Site Scripting via the 'ai-active-tab' parameter in versions up to, and including, 1.5.5 due to insufficient input sanitization and output escaping and missing nonce validation. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Ad Inserter – Ad Manager & AdSense Ads
All 29| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.5 | Unauthenticated Arbitrary Shortcode Execution via 's' Search Parameter ≤2.8.19Update to 2.8.20 | CVE-2026-102905 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤2.8.19Update to 2.8.20 | CVE-2026-105077 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤2.8.18Update to 2.8.19 | CVE-2026-118094 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.8.18Update to 2.8.19 | CVE-2026-114709 | |
| Medium6.1 | Reflected Cross-Site Scripting ≤2.8.18Update to 2.8.19 | CVE-2026-114194 |
- Medium6.5Unauthenticated Arbitrary Shortcode Execution via 's' Search Parameter
≤2.8.19Update to 2.8.20
- High7.2Unauthenticated Stored Cross-Site Scripting
≤2.8.19Update to 2.8.20
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤2.8.18Update to 2.8.19
- Medium6.1Reflected Cross-Site Scripting
≤2.8.18Update to 2.8.19
- Medium6.1Reflected Cross-Site Scripting
≤2.8.18Update to 2.8.19
Same weakness (Cross-Site Scripting)
All Cross-Site Scripting| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity medium, CVSS 4.8
Record last updated
Sources & licenses
- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.