CVE-2026-66619 Tribulant Software CVE debrief

Who should care

Defenders responsible for WordPress installations with the Newsletters plugin version <= 4.18 should assess exposure and prioritize remediation.

Why it matters

CVE-2026-66619 is a HIGH severity vulnerability in Newsletters plugin versions <= 4.18, allowing administrator SQL injection attacks. Defenders should assess exposure, prioritize remediation, and verify inventory for affected versions.

• Verify inventory for affected Newsletters plugin versions to assess exposure
• Prioritize remediation for vulnerable versions to prevent potential SQL injection attacks
• Assess potential impact on confidentiality due to HIGH severity vulnerability

Technical summary

CVE-2026-66619 is a HIGH severity vulnerability in Newsletters plugin versions <= 4.18, allowing administrator SQL injection attacks. The vulnerability has a CVSS score of 7.6 and a CVSS severity of HIGH.

Defensive priority

Defenders should prioritize verifying inventory for affected Newsletters plugin versions and assess exposure to potential SQL injection attacks.

Recommended defensive actions

• Verify inventory for affected Newsletters plugin versions
• Assess exposure to potential SQL injection attacks
• Prioritize remediation for vulnerable versions

Evidence notes

The CVE record and NVD entry provide limited information about the vulnerability. Further verification is required to determine affected versions and potential impact.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.