VULNERABILITY INTELLIGENCE
CVE-2020-15676
CVSS score6.1 MEDIUM
EPSS probability1.59%
CISA KEVNot currently listed
Published2020-10-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Description
Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
Weakness classification
- nvd@nist.gov: CWE-79
Primary references
- security@mozilla.org — Broken Link, Mailing List, Third Party Advisory
- security@mozilla.org — Broken Link, Mailing List, Third Party Advisory
- security@mozilla.org — Issue Tracking, Permissions Required, Vendor Advisory
- security@mozilla.org — Mailing List, Third Party Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Third Party Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- security@mozilla.org — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Permissions Required, Vendor Advisory