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CVE-2021-4140

Date: December 22, 2022

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.

Severity Score

10.0

Related Resources (10)

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-4140

Url: https://access.redhat.com/security/cve/CVE-2021-4140

Url: https://security-tracker.debian.org/tracker/CVE-2021-4140

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-4140

Url: https://security.alpinelinux.org/vuln/CVE-2021-4140

Url: https://www.mozilla.org/security/advisories/mfsa2022-03/

Url: https://www.mozilla.org/security/advisories/mfsa2022-02/

Url: https://www.mozilla.org/security/advisories/mfsa2022-01/

Url: https://bugzilla.mozilla.org/show_bug.cgi?id=1746720

Url: https://www.mend.io/vulnerability-database/CVE-2021-4140

Severity Score

10.0

Weakness Type (CWE)

XML Injection (aka Blind XPath Injection)

CWE-91

CVSS v3.1

Base Score:	10.0
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	CHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

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