Sensitive data exposure in WordPress Mailjet Email Marketing plugin
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-201.
Summary
The WordPress Mailjet Email Marketing plugin up to and including 6.2.3 inserts sensitive information into data it sends (CWE-201). An unauthenticated remote attacker can read that sensitive data over the network without user interaction.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Unauthenticated Sensitive Data Exposure in Mailjet Email Marketing <= 6.2.3 versions.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
The sources list no fixed version for Mailjet Email Marketing.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-06 Threatist record created from CVE-2026-39791
- 2026-10-06 Alias added: GHSA-g35c-mm2g-fxmw
- 2026-10-06 CISA SSVC decision points changed
More Mailjet vulnerabilities
- TI-2024-12340 Mailjet - Moderately critical - Arbitrary PHP code execution - SA-CONTRIB-2024-062 CVSS 3.1MEDIUM 6.6
Sources
- CVE-2026-39791 · CVE Program
- CVE-2026-39791 · NVD
- FIRST EPSS
- GHSA-g35c-mm2g-fxmw · 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