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Vulnerability · Published Jun 14, 2026 · Assigned by CPANSec

CVE-2026-11527Config::IniFiles versions before 3.001000 for Perl allow OS command injection and file overwrite via a 2-arg open() of the -file argument in _make_filehandle

High 8.6

In plain English

A high-severity OS command injection in Config::IniFiles from SHLOMIF. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High
Exploit odds (30 days)1.1%top 35.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Config::IniFiles versions before 3.001000 for Perl allow OS command injection and file overwrite via a 2-arg open() of the -file argument in _make_filehandle. Config::IniFiles::_make_filehandle opens a filename argument with Perl's 2-arg open(), so a filename that begins or ends with a pipe ("| cmd", "cmd |") or begins with a redirect ("> path", ">> path") is run as a command or redirect rather than opened as a file. The helper is the open path behind the documented -file argument: new(-file => $thing) reaches it through ReadConfig. An in-memory scalar reference (-file => \$text) does not open a path and is unaffected. Any caller that forwards untrusted input to the -file argument can run an arbitrary command or truncate a file under the process UID.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.21perl-config-inifiles3.002000-r0ALPINE-CVE-2026-11527
Alpine:v3.22perl-config-inifiles3.002000-r0ALPINE-CVE-2026-11527
Alpine:v3.23perl-config-inifiles3.002000-r0ALPINE-CVE-2026-11527
Alpine:v3.24perl-config-inifiles3.002000-r0ALPINE-CVE-2026-11527
Debian:12libconfig-inifiles-perl3.000003-2+deb12u1DEBIAN-CVE-2026-11527
Debian:13libconfig-inifiles-perl3.000003-3+deb13u1DEBIAN-CVE-2026-11527
Debian:14libconfig-inifiles-perl3.000003-5DEBIAN-CVE-2026-11527
Ubuntu:22.04:LTSlibconfig-inifiles-perl3.000003-1ubuntu0.1USN-8445-1
Ubuntu:22.04:LTSlibconfig-inifiles-perl3.000003-1ubuntu0.1UBUNTU-CVE-2026-11527
Ubuntu:24.04:LTSlibconfig-inifiles-perl3.000003-2ubuntu0.1USN-8445-1
Ubuntu:24.04:LTSlibconfig-inifiles-perl3.000003-2ubuntu0.1UBUNTU-CVE-2026-11527
Ubuntu:25.10libconfig-inifiles-perl3.000003-3ubuntu0.1USN-8445-1
Ubuntu:25.10libconfig-inifiles-perl3.000003-3ubuntu0.1UBUNTU-CVE-2026-11527
Ubuntu:26.04:LTSlibconfig-inifiles-perl3.000003-4ubuntu0.1UBUNTU-CVE-2026-11527
Ubuntu:26.04:LTSlibconfig-inifiles-perl3.000003-4ubuntu0.1USN-8445-1

Affected products (as reported)

VendorProductVersions
SHLOMIF Config::IniFiles 0 – before 3.001000

Weakness: CWE-78, CWE-73 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References