VYPR
Medium severity6.1NVD Advisory· Published Dec 9, 2020· Updated Jun 17, 2026

CVE-2020-26951

CVE-2020-26951

Description

A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

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Affected products

38

Patches

Vulnerability mechanics

References

4

News mentions

0

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