CVE-2019-11763 (GCVE-0-2019-11763)

Vulnerability from cvelistv5 – Published: 2020-01-08 19:59 – Updated: 2024-08-04 23:03
VLAI?
Summary
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
Severity ?
No CVSS data available.
CWE
  • Incorrect HTML parsing results in XSS bypass technique
Assigner
References
Impacted products
Vendor Product Version
Mozilla Firefox Affected: before 70
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}


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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.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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