Cross-site Scripting (XSS) Affecting firefox-esr package, versions <91.11.0esr-1


0.0
medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Integrity High

    Threat Intelligence

    EPSS 0.09% (38th percentile)
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NVD
6.5 medium
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Red Hat
6.1 medium
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SUSE
6.5 medium

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  • Snyk ID SNYK-DEBIANUNSTABLE-FIREFOXESR-2936699
  • published 1 Jun 2022
  • disclosed 22 Dec 2022

How to fix?

Upgrade Debian:unstable firefox-esr to version 91.11.0esr-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR < 91.11, Thunderbird < 102, Thunderbird < 91.11, and Firefox < 101.