🔐 CVE Alert

CVE-2026-100779

HIGH 8.8

Use-after-free in the XSLT component

CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th

Use-after-free in the XSLT component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Vendor mozilla
Product firefox
Ecosystems
Industries
Technology
Published Sep 29, 2026
Last Updated Sep 29, 2026
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Affected Versions

Mozilla / Firefox
All versions affected

References

NVD ↗ CVE.org ↗ EPSS Data ↗
bugzilla.mozilla.org: https://bugzilla.mozilla.org/show_bug.cgi?id=2068417 mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-100/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-97/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-98/ mozilla.org: https://www.mozilla.org/security/advisories/mfsa2026-99/

Credits

Mozilla