CVE-2019-12970: Squirrelmail

Medium severity, CVSS 6.1. EPSS: 1.8% chance of exploitation in the next 30 days.

XSS was discovered in SquirrelMail through 1.4.22 and 1.5.x through 1.5.2. Due to improper handling of RCDATA and RAWTEXT type elements, the built-in sanitization mechanism can be bypassed. Malicious script content from HTML e-mail can be executed within the application context via crafted use of (for example) a NOEMBED, NOFRAMES, NOSCRIPT, or TEXTAREA element.

Affected products

• Squirrelmail Squirrelmail: up to and including 1.4.22; from 1.5.0, up to and including 1.5.2

Published 2019-07-01. Last modified 2026-06-17.