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CVE-2021-31805

nvd nistnuclei
Published: Apr 12, 2022Modified: Jun 17, 2026

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

Description

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.

Affected (1)

Products: Apache: Struts
Apache
1 product
Struts
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Struts
From 2.0.0 to 2.5.29

Related CWEs

CWE-917
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
The product constructs all or part of an expression language (EL) statement in a framework such as a Java Server Page (JSP) using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended EL statement before it is executed.

References (8)

Source: security@apache.org
Mailing ListMitigationThird Party Advisory
Source: security@apache.org
MitigationPatchVendor Advisory
Source: security@apache.org
Third Party Advisory
Source: security@apache.org
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListMitigationThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
MitigationPatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.