`AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` and `AppendEncodedCharacters()` could have experienced integer overflows, causing underallocation of an output buffer leading to an out of bounds write. This vulnerability affects Firefox < 124, Firefox ESR < 115.9, and Thunderbird < 115.9.
`AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` y `AppendEncodedCharacters()` podrían haber experimentado desbordamientos de enteros, lo que provocó una asignación insuficiente de un búfer de salida, lo que provocó una escritura fuera de los límites. Esta vulnerabilidad afecta a Firefox < 124, Firefox ESR < 115.9 y Thunderbird < 115.9.
The Mozilla Foundation Security Advisory describes this flaw as:
`AppendEncodedAttributeValue(), ExtraSpaceNeededForAttrEncoding()` and `AppendEncodedCharacters()` could have experienced integer overflows, causing underallocation of an output buffer leading to an out of bounds write.
