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CVE-2026-74960

🗓️ 19 Aug 2026 00:00:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 3 Views

Firefox WebExtensions site isolation flaw allows cross-origin access bypassing security boundaries.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-74960
19 Aug 202604:46
circl
cve
CVE
CVE-2026-74960
18 Aug 202612:23
cve
cvelist
Cvelist
CVE-2026-74960 Site isolation issue in the WebExtensions component
18 Aug 202612:23
cvelist
debian
Debian
[SECURITY] [DSA 6451-1] firefox-esr security update
19 Aug 202617:45
debian
debiancve
Debian CVE
CVE-2026-74960
18 Aug 202612:23
debiancve
nessus
Tenable Nessus
Debian dsa-6451 : firefox-esr - security update
19 Aug 202600:00
nessus
nessus
Tenable Nessus
Mozilla Firefox ESR < 140.14
18 Aug 202600:00
nessus
nessus
Tenable Nessus
Mozilla Firefox ESR < 153.1
18 Aug 202600:00
nessus
nessus
Tenable Nessus
Mozilla Firefox < 154.0
18 Aug 202600:00
nessus
nessus
Tenable Nessus
Mozilla Thunderbird < 140.14
19 Aug 202600:00
nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu22.04allthunderbird0thunderbird_0_all.deb
Ubuntu18.04allmozjs380mozjs38_0_all.deb

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19 Aug 2026 13:04Current
5.2Medium risk
Vulners AI Score5.2
EPSS0.00156
3