// For flags

CVE-2021-31805

Forced OGNL evaluation, when evaluated on raw not validated user input in tag attributes, may lead to RCE.

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

5
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The fix issued for CVE-2020-17530 was incomplete. So from Apache Struts 2.0.0 to 2.5.29, still some of the tag’s attributes could perform a double evaluation if a developer applied forced OGNL evaluation by using the %{...} syntax. Using forced OGNL evaluation on untrusted user input can lead to a Remote Code Execution and security degradation.

La corrección emitida para CVE-2020-17530 era incompleta. Así, desde Apache Struts versiones 2.0.0 hasta 2.5.29, todavía algunos de los atributos de las etiquetas podían llevar a cabo una doble evaluación si un desarrollador aplicaba la evaluación OGNL forzada usando la sintaxis %{...}. El uso de la evaluación forzada de OGNL en entradas de usuario no confiables puede conllevar a una Ejecución de Código Remota y una degradación de la seguridad

*Credits: Apache Struts would like to thank Chris McCown for reporting this issue!
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-04-26 CVE Reserved
  • 2022-04-12 CVE Published
  • 2022-04-15 First Exploit
  • 2024-08-03 CVE Updated
  • 2024-11-16 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache
Search vendor "Apache"
Struts
Search vendor "Apache" for product "Struts"
>= 2.0.0 <= 2.5.29
Search vendor "Apache" for product "Struts" and version " >= 2.0.0 <= 2.5.29"
-
Affected