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CVE-2020-26951

UNKNOWN
Published 2020-12-09T00:19:43
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No CVSS data available

Description

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Mozilla

Firefox

Affected Versions:

< 83
Mozilla

Firefox ESR

Affected Versions:

< 78.5
Mozilla

Thunderbird

Affected Versions:

< 78.5

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-w7p8-wf2r-rw5h

Advisory 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.

CVSS Scoring

CVSS Score

5.0

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2020-26951
WEB https://bugzilla.mozilla.org/show_bug.cgi?id=1667113
WEB https://www.mozilla.org/security/advisories/mfsa2020-50
WEB https://www.mozilla.org/security/advisories/mfsa2020-51
WEB https://www.mozilla.org/security/advisories/mfsa2020-52

Advisory provided by GitHub Security Advisory Database. Published: May 24, 2022, Modified: May 24, 2022

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1667113
https://www.mozilla.org/security/advisories/mfsa2020-50/
https://www.mozilla.org/security/advisories/mfsa2020-52/
https://www.mozilla.org/security/advisories/mfsa2020-51/
Published: 2020-12-09T00:19:43
Last Modified: 2024-08-04T16:03:22.995Z
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