CVE-2026-120632 | BDVDB-2026-399652 Detail

Description#

CGI versions before 5.00 for Perl allow CPU exhaustion via a backtracking regex on the XForms multipart/related Content-Type. When a POST Content-Type contains multipart/related, the boundary and start parameters are extracted with an unanchored pattern that puts .+ on either side of the boundary capture, which backtracks in cubic time on a header that does not match. No request body is needed.

Impact#

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Exploit#

History#

1. Version 12026-11-03Record published in the CVE List.
2. Version 22026-11-09Most recent update recorded in the CVE List.