CVE-2020-26951

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Source

https://nvd.nist.gov/vuln/detail/CVE-2020-26951

Import Source

https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-26951.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2020-26951

Related

Published

2020-12-09T01:15:12Z

Modified

2024-09-11T02:00:05Z

Severity

6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator

Summary

[none]

Details

A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.

References

Affected packages

Debian:11 / firefox-esr

Package

Name: firefox-esr
Purl: pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

78.5.0esr-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / firefox-esr

Package

Name: firefox-esr
Purl: pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

78.5.0esr-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / firefox-esr

Package

Name: firefox-esr
Purl: pkg:deb/debian/firefox-esr?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

78.5.0esr-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:11 / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:78.5.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:78.5.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / thunderbird

Package

Name: thunderbird
Purl: pkg:deb/debian/thunderbird?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:78.5.0-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}