Improper input validation in Apache Struts

CVE-2008-6504

ParametersInterceptor in OpenSymphony XWork 2.0.x before 2.0.6 and 2.1.x before 2.1.2, as used in Apache Struts and other products, does not properly restrict # (pound sign) references to context objects, which allows remote attackers to execute Object-Graph Navigation Language (OGNL) statements and modify server-side context objects, as demonstrated by use of a \u0023 representation for the # character.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.363 (98.3th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2008-6504?
CVE-2008-6504 is a vulnerability in Apache Struts, classified under Improper Input Validation. Published 2009-03-23.
Is CVE-2008-6504 known to be exploited?
5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.