MailArchiver <= 4.5.0 - Authenticated (Admininistrator+) SQL Injection via 'logid' Parameter
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- SQL injection
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-89.
Summary
The MailArchiver plugin for WordPress is vulnerable to SQL Injection via the ‘logid’ parameter in all versions up to, and including, 4.5.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Pierre Lannoy | MailArchiver | up to 4.5.0 | — | No fix listed | CNA |
- MailArchiver VendorPierre Lannoy Affected up to 4.5.0 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-2831
- 2026-10-03 Alias added: GHSA-xw84-4gx9-vm4h
References
Other 3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/5bc8da1b-8095-46b5-8268-63bdddb4e629?source=cve
- https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.5.0/includes/features/class-eventviewer.php#L79
- https://plugins.trac.wordpress.org/browser/mailarchiver/tags/4.5.0/includes/features/class-events.php#L614
More Pierre Lannoy vulnerabilities
- TI-2025-08410 Vibes <= 2.2.0 - Unauthenticated SQL Injection via `resource` Parameter CVSS 3.1HIGH 7.5
- TI-2024-19991 WordPress DecaLog plugin <= 3.9.0 - SQL Injection vulnerability CVSS 3.1HIGH 7.6
- TI-2024-37046 WordPress Device Detector Plugin <= 4.2.0 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
- TI-2025-22096 WordPress IP Locator plugin <= 4.1.0 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
- TI-2025-35744 WordPress Sessions Plugin <= 3.2.0 - Cross Site Scripting (XSS) Vulnerability CVSS 3.1MEDIUM 5.9
- TI-2026-02329 MailArchiver <= 4.4.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings CVSS 3.1MEDIUM 4.8
Sources
- CVE-2026-2831 · CVE Program
- CVE-2026-2831 · NVD
- FIRST EPSS
- GHSA-xw84-4gx9-vm4h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences