A vulnerability has been reported in XWork, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to an error within the input validation code of XWork. This can be exploited to execute OGNL (Object-Graph Navigation Language) commands by e.g. sending a maliciously filled HTML form to a vulnerable server.
The vulnerability is reported in versions prior to 2.0.4.
Solution: Update to version 2.0.4.
Provided and/or discovered by: Reported in a bug by Andrea Vettori.
Original Advisory: Apache Struts advisory:
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