FKIE_CVE-2019-11744
Vulnerability from fkie_nvd - Published: 2019-09-27 18:15 - Updated: 2025-11-25 17:50
Severity ?
Summary
Some HTML elements, such as <title> and <textarea>, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| mozilla | firefox | * | |
| mozilla | firefox | * | |
| mozilla | firefox | * | |
| mozilla | thunderbird | * | |
| mozilla | thunderbird | * |
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"value": "Some HTML elements, such as \u0026lt;title\u0026gt; and \u0026lt;textarea\u0026gt;, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. This vulnerability affects Firefox \u003c 69, Thunderbird \u003c 68.1, Thunderbird \u003c 60.9, Firefox ESR \u003c 60.9, and Firefox ESR \u003c 68.1."
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"value": "Algunos elementos HTML, tales como \u0026lt;title\u0026gt; y \u0026lt;textarea\u0026gt;, puede contener corchetes angulares literales sin tratarlos como un marcado. Es posible pasar una etiqueta de cierre literal a .innerHTML en estos elementos, y el contenido posterior se analizar\u00e1 como si estuviera fuera de la etiqueta. Esto puede conllevar a un ataque de tipo XSS si un sitio no filtra la entrada del usuario tan estrictamente para estos elementos como lo hace para otros elementos. Esta vulnerabilidad afecta a Firefox versiones anteriores a 69, Thunderbird versiones anteriores a 68.1, Thunderbird versiones anteriores a 60.9, Firefox versiones anteriores a 60.9 y Firefox ESR versiones anteriores a 68.1."
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"lastModified": "2025-11-25T17:50:16.803",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- 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.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- 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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