Unrated severityNVD Advisory· Published Sep 29, 2026

CVE-2026-100821

Description

Site isolation issue in the Panning and Zooming component. This vulnerability was fixed in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Affected products

Mozilla Corporation/Firefoxllm-fuzzy
Range: ESR 153.4, 157, ESR 115.42, ESR 140.17

Patches

Vulnerability mechanics

References

bugzilla.mozilla.org/show_bug.cginvd
www.mozilla.org/security/advisories/mfsa2026-100/nvd
www.mozilla.org/security/advisories/mfsa2026-97/nvd
www.mozilla.org/security/advisories/mfsa2026-98/nvd
www.mozilla.org/security/advisories/mfsa2026-99/nvd

News mentions

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