CVE-2026-120645
Unknown
Description
CGI versions before 5.00 for Perl allow denial of service via submitted values used as a regex for optgroup selection in scrolling_list. When rendering option groups, scrolling_list marks the selected options by interpolating each selected value, by default taken from the request parameters, unescaped into a substitution pattern. A client can make the request die with an invalid pattern, or tie up the process with one that backtracks heavily.
SeverityUnknown
CVSS—
Exploit probability—
ProductCgi
PublishedNov 4, 2026
First seenNov 4, 2026
Weakness typeCWE-1333CWE-1333CWE-625CWE-625
How to fix
Update
- CGI5.00 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| CGI | v < 5.00 | 5.00 |
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