CVE-2007-4556

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

28/08/2007

Last modified:

09/04/2025

Description

Struts support in OpenSymphony XWork before 1.2.3, and 2.x before 2.0.4, as used in WebWork and Apache Struts, recursively evaluates all input as an Object-Graph Navigation Language (OGNL) expression when altSyntax is enabled, which allows remote attackers to cause a denial of service (infinite loop) or execute arbitrary code via form input beginning with a "%{" sequence and ending with a "}" character.

Impact

Vector 2.0

AV:N/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

6.80

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:opensymphony:xwork::::::::		1.2.3 (excluding)
cpe:2.3:a:opensymphony:xwork::::::::	2.0.0 (including)	2.0.4 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2007-4556

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools