// For flags

CVE-2020-26216

Cross-Site Scripting in TYPO3 Fluid

Severity Score

6.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

TYPO3 Fluid before versions 2.0.8, 2.1.7, 2.2.4, 2.3.7, 2.4.4, 2.5.11 and 2.6.10 is vulnerable to Cross-Site Scripting. Three XSS vulnerabilities have been detected in Fluid: 1. TagBasedViewHelper allowed XSS through maliciously crafted additionalAttributes arrays by creating keys with attribute-closing quotes followed by HTML. When rendering such attributes, TagBuilder would not escape the keys. 2. ViewHelpers which used the CompileWithContentArgumentAndRenderStatic trait, and which declared escapeOutput = false, would receive the content argument in unescaped format. 3. Subclasses of AbstractConditionViewHelper would receive the then and else arguments in unescaped format. Update to versions 2.0.8, 2.1.7, 2.2.4, 2.3.7, 2.4.4, 2.5.11 or 2.6.10 of this typo3fluid/fluid package that fix the problem described. More details are available in the linked advisory.

TYPO3 Fluid anterior a versiones 2.0.8, 2.1.7, 2.2.4, 2.3.7, 2.4.4, 2.5.11 y 2.6.10, es vulnerable a un ataque de tipo Cross-Site Scripting. Se han detectado tres vulnerabilidades de tipo XSS en Fluid: 1. TagBasedViewHelper permitía un ataque de tipo XSS por medio de matrices de additionalAttributes creadas maliciosamente mediante la creación de claves con comillas de cierre de atributos seguidas de HTML. Al representar tales atributos, TagBuilder no escapaba de las claves. 2. ViewHelpers que usaba el rasgo CompileWithContentArgumentAndRenderStatic, y que declaraba escapeOutput = false, recibirían el argumento de contenido en formato sin escape. 3. Las subclases de AbstractConditionViewHelper recibirían los argumentos then y else en formato sin escape. Actualice a las versiones 2.0.8, 2.1.7, 2.2.4, 2.3.7, 2.4.4, 2.5.11 o 2.6.10 de este paquete typo3fluid/fluid que corrige el problema descrito. Mas detalles están disponibles en el aviso vinculado

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-10-01 CVE Reserved
  • 2020-11-17 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-04 EPSS Updated
  • 2024-08-04 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Typo3
Search vendor "Typo3"
Fluid
Search vendor "Typo3" for product "Fluid"
< 2.0.8
Search vendor "Typo3" for product "Fluid" and version " < 2.0.8"
-
Affected
Typo3
Search vendor "Typo3"
Fluid
Search vendor "Typo3" for product "Fluid"
>= 2.1.0 < 2.1.7
Search vendor "Typo3" for product "Fluid" and version " >= 2.1.0 < 2.1.7"
-
Affected
Typo3
Search vendor "Typo3"
Fluid
Search vendor "Typo3" for product "Fluid"
>= 2.2.0 < 2.2.4
Search vendor "Typo3" for product "Fluid" and version " >= 2.2.0 < 2.2.4"
-
Affected
Typo3
Search vendor "Typo3"
Fluid
Search vendor "Typo3" for product "Fluid"
>= 2.3.0 < 2.3.7
Search vendor "Typo3" for product "Fluid" and version " >= 2.3.0 < 2.3.7"
-
Affected
Typo3
Search vendor "Typo3"
Fluid
Search vendor "Typo3" for product "Fluid"
>= 2.4.0 < 2.4.4
Search vendor "Typo3" for product "Fluid" and version " >= 2.4.0 < 2.4.4"
-
Affected
Typo3
Search vendor "Typo3"
Fluid
Search vendor "Typo3" for product "Fluid"
>= 2.5.0 < 2.5.11
Search vendor "Typo3" for product "Fluid" and version " >= 2.5.0 < 2.5.11"
-
Affected
Typo3
Search vendor "Typo3"
Fluid
Search vendor "Typo3" for product "Fluid"
>= 2.6.0 < 2.6.10
Search vendor "Typo3" for product "Fluid" and version " >= 2.6.0 < 2.6.10"
-
Affected