The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade Debian:13 libfcgi-perl to version 0.73-2 or higher.
Note: Versions mentioned in the description apply only to the upstream libfcgi-perl package and not the libfcgi-perl package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
The FCGI (aka Fast CGI) module 0.70 through 0.73 for Perl, as used by CGI::Fast, uses environment variable values from one request during processing of a later request, which allows remote attackers to bypass authentication via crafted HTTP headers.