Mail Logging <= 1.16.0 — Cross-Site Scripting to Unauthenticated Arbitrary HTML Content Injection in Admin Log
CVE-2026-1661Published · Updated Action summary
Affected: ≤1.16.0Update to 1.17.0 or newer
All remediation steps- Severity
- Medium4.7
- CVSS
- 4.7CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:RUser interaction- Required
S:CScope- Changed
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-20 Improper Input Validation
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
WP Mail Logging wp-mail-logging
- Affected≤ 1.16.0
- Patched in1.17.0
Update to 1.17.0 or newer.
You are affected if you run ≤ 1.16.0. Version 1.17.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under WP Mail Logging.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 1.17.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch WP Mail Logging to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Kasia Sok.
The Mail Logging plugin for WordPress is vulnerable to HTML Injection in all versions up to, and including, 1.16.0. This is due to insufficient sanitization of logged email message content before rendering in admin screens, specifically missing removal of style blocks and navigation attributes from untrusted HTML. This makes it possible for unauthenticated attackers to inject arbitrary HTML content, including styled elements and navigation links, into admin email log screens via publicly accessible forms, deceiving administrators and redirecting their browsers to attacker-controlled pages.
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 WP Mail Logging
All 9| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Low2.7 | Authenticated (Administrator+) Sensitive Information Exposure in LIKE Wildcard in Personal Data Export Email ≤1.17.0Update to 1.17.1 | CVE-2026-109401 | |
| High7.5 | Unauthenticated PHP Object Injection via Email Log Message Field ≤1.15.0Update to 1.16 | CVE-2026-2471 | |
| Medium4.3 | Missing Authorization to Notice Dismissal <1.12.0Update to 1.12.0 | — | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Email ≤1.11.1Update to 1.11.2 | CVE-2023-3081 | |
| Medium4.3 | Missing Authorization ≤3.6.0Update to 3.6.1 | — |
- Low2.7Authenticated (Administrator+) Sensitive Information Exposure in LIKE Wildcard in Personal Data Export Email
≤1.17.0Update to 1.17.1
- High7.5Unauthenticated PHP Object Injection via Email Log Message Field
≤1.15.0Update to 1.16
- Medium4.3Missing Authorization to Notice Dismissal
<1.12.0Update to 1.12.0
- High7.2Unauthenticated Stored Cross-Site Scripting via Email
≤1.11.1Update to 1.11.2
- Medium4.3Missing Authorization
≤3.6.0Update to 3.6.1
Timeline
CVE published
Severity medium, CVSS 4.7
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- 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.