CVE-2010-1158: Integer overflow in the regular expression engine in Perl 5.8.x allows context-dependent attackers to cause...

Security readout for executives and security teams

CVE-2010-1158 is a denial-of-service flaw in Perl 5.8.x. A crafted regular expression matched against a long string can consume stack and crash the application. Business impact depends on whether user-controlled regex patterns or long inputs reach legacy Perl code. Exposure is most likely in legacy systems still running Perl 5.8.x, especially services that process attacker-controlled regular expressions or long text inputs. Modern supported Perl deployments are less likely to be affected, but the bundle does not define exact package ranges. Treat as a legacy exposure cleanup item, not an emergency internet-wide incident. Prioritize systems where old Perl processes handle external input, because exploitation can interrupt service availability. Mitigation focus: Inventory systems and applications still using Perl 5.8.x.; Check Gentoo, Red Hat, and other vendor guidance for fixed Perl packages.; Upgrade legacy Perl runtimes to supported vendor-maintained releases..

Prepared

Jun 28, 2026, 02:49 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.