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High severity7.5NVD Advisory· Published Aug 18, 2026· Updated Aug 25, 2026

CVE-2026-74982

CVE-2026-74982

Description

Denial-of-service in the Widget component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

Affected products

7

Mozilla Corporation/Firefoxllm-fuzzy
Range: Firefox 154, Firefox ESR 153.1
osv-coords6 versions
pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed pkg:rpm/opensuse/mozilla-nspr&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/mozilla-nss&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/rust-cbindgen&distro=openSUSE%20Leap%2016.0
< 153.1.0-160000.1.2+ 5 more
- (no CPE)range: < 153.1.0-160000.1.2
- (no CPE)range: < 154.0-1.1
- (no CPE)range: < 153.1.0-1.1
- (no CPE)range: < 4.39-160000.1.1
- (no CPE)range: < 3.125-160000.1.1
- (no CPE)range: < 0.29.4+git0-160000.1.1

Patches

Vulnerability mechanics

References

5

www.mozilla.org/security/advisories/mfsa2026-74/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2026-77/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2026-78/nvdVendor Advisory
www.mozilla.org/security/advisories/mfsa2026-80/nvdVendor Advisory
bugzilla.mozilla.org/show_bug.cginvdPermissions Required

News mentions

0

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