Vulnerability Monitor

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CVE-2021-4140

It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

Published

2022-12-22T20:15:12.250

Last Modified

2025-04-16T16:15:19.117

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 10.0 (CRITICAL)

Weaknesses

Type: Primary
CWE-91
Type: Secondary
CWE-91

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 96.0	Yes
Application	mozilla	firefox_esr	< 91.5	Yes
Application	mozilla	thunderbird	< 91.5	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1746720 Exploit, Issue Tracking, Patch, Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2022-01/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2022-02/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2022-03/ Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1746720 Exploit, Issue Tracking, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2022-01/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2022-02/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2022-03/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)