CVE-2020-26956 (GCVE-0-2020-26956)

Vulnerability from cvelistv5 – Published: 2020-12-09 00:21 – Updated: 2024-08-04 16:03
VLAI?
Summary
In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
Severity ?
No CVSS data available.
CWE
  • XSS through paste (manual and clipboard API)
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Affected: < 83
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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