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CVE-2026-100819

Sandbox escape due to incorrect boundary conditions in the XPCOM component PUBLISHED

Description (CNA)

Sandbox escape due to incorrect boundary conditions in the XPCOM component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 140.17, Thunderbird 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17.

Affected (CNA)

Vendor / productVersions
Mozilla / Firefoxunaffected 115.42 through 115.*; unaffected 140.17 through 140.*; unaffected 153.4 through 153.*; unaffected 157 through *
Mozilla / Thunderbirdunaffected 140.17 through 140.*; unaffected 153.4 through 153.*; unaffected 157 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.