CVSS9.8
Severitycritical
WeaknessCWE-266
EPSS0.48%41.4th percentile
Exploited1 KEV source
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
patch window
Called exploited 4 days before disclosure.
Measured from the CVE publication date to the earliest of 1 KEV catalogue that list it.
The life of this vulnerability
- CVE published
- First KEV listing4d
- Last sightingsame day
Gaps are compressed to equal steps. The elapsed time is printed under each.
Which catalogues call it exploited
- CISA KEVUS federaldoes not list it
- EUVDENISA, European Uniondoes not list it
- VulnCheck KEVcommercial researchlisted Jul 9, 2026
- CIRCLaggregator, mirrors the abovedoes not list it
Sources1 of 3
Listings differ by—
This rests on a single catalogue. No second catalogue corroborates the claim that it is being exploited. CIRCL is an aggregator and is not counted.
Public exploitation evidence
- reported exploitationpatchstack.com/database/wordpress/plugin/mailoptin/vulnerabi
1 public report collected from VulnCheck and CIRCL, first on Jul 9, 2026. Each links to its original source. We have not verified them.
Description
Incorrect Privilege Assignment vulnerability in properfraction MailOptin mailoptin allows Privilege Escalation.This issue affects MailOptin: from n/a through <= 1.2.77.3.