A vulnerability has been reported in TWiki, which can be exploited by malicious people to compromise a vulnerable system.
Input passed to the "rev" parameter in "/cgi-bin/view/Main/TWikiUsers" isn't properly sanitised before being used in a shell expression. This can be exploited to inject arbitrary shell commands via special shell meta characters.
The vulnerability has been reported in versions TWikiRelease02Sep2004, TWikiRelease01Sep2004, TWikiRelease01Feb2003, TWikiRelease01Dec2001, and TWikiRelease01Dec2000.
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