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CVE-2019-11763

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2019
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

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.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Firefox

Vendor
Mozilla
Product
Firefox
Platforms
Unknown
Default status
Unknown
Firefox · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
before 70affectedUnavailableUnavailableUnavailableNone listed

Thunderbird

Vendor
Mozilla
Product
Thunderbird
Platforms
Unknown
Default status
Unknown
Thunderbird · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
before 68.2affectedUnavailableUnavailableUnavailableNone listed

Firefox ESR

Vendor
Mozilla
Product
Firefox ESR
Platforms
Unknown
Default status
Unknown
Firefox ESR · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
before 68.2affectedUnavailableUnavailableUnavailableNone listed