CVE-2026-25420

MEDIUMNVD 4.34.3—

4.3

Missing Authorization vulnerability in MailerLite MailerLite official-mailerlite-sign-up-forms allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MailerLite: from n/a through <= 1.7.18.

CVSS v3: 4.3
EG Score: 4.3(medium)
EPSS: 16.9%
KEV: Not listed

Published

February 19, 2026

Last Modified

April 15, 2026

References (1)

audit@patchstackhttps://patchstack.com/database/Wordpress/Plugin/official-mailerlite-sign-up-forms/vulnerability/wordpress-mailerlite-plugin-1-7-18-broken-access-control-vulnerability?_s_id=cve

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-20 22:38 UTCepss_batch

Frequently asked(5)

What is CVE-2026-25420?

CVE-2026-25420 is a medium vulnerability published on February 19, 2026. Missing Authorization vulnerability in MailerLite MailerLite official-mailerlite-sign-up-forms allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MailerLite: from n/a through <= 1.7.18.

When was CVE-2026-25420 disclosed?

CVE-2026-25420 was first published in the National Vulnerability Database on February 19, 2026, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-25420 actively exploited?

CVE-2026-25420 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 16.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-25420?

CVE-2026-25420 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2026-25420?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-25420, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-25420

📅 Published

🔄 Last Modified

🔗 References (1)