CVE-2026-74970

Published Aug 18, 2026

Last updated 15 hours ago

CVSS medium 5.4

Overview

Description
Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.
Source
security@mozilla.org
NVD status
Undergoing Analysis

Risk scores

CVSS 3.1

Type
Secondary
Base score
5.4
Impact score
2.5
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Severity
MEDIUM

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-346

Social media

Hype score is a measure of social media activity compared against trending CVEs from the past 12 months. Max score 100.

Hype score

10

  1. الحمدلله باركوا لي طلعت 3 CVE في Firefox Browser CVE-2026-74943 CVE-2026-74945 CVE-2026-74970 There are 2 more CVEs coming بيجيكم اطلق write up #Firefox #CVE #bugzilla #mozilla #browser #infosec #secinfo

    @DS4_

    17 Aug 2026

    5870 Impressions

    0 Retweets

    121 Likes

    43 Bookmarks

    24 Replies

    0 Quotes

References

Sources include official advisories and independent security research.