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Fencer Vulns
high 8.6

CVE-2026-11527 json

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

published 2026-06-14 4 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-36660

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

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.

Patch / fix

  • SHLOMIF Config::IniFiles 3.001000
  • libconfig-inifiles-perl Debian 12 3.000003-2+deb12u1
  • libconfig-inifiles-perl Debian 13 3.000003-3+deb13u1
  • libconfig-inifiles-perl Debian 14 3.000003-5

debian advisories DEBIAN-CVE-2026-11527

  • libconfig-inifiles-perl Ubuntu 22.04 LTS 3.000003-1ubuntu0.1
  • libconfig-inifiles-perl Ubuntu 24.04 LTS 3.000003-2ubuntu0.1
  • libconfig-inifiles-perl Ubuntu 25.10 3.000003-3ubuntu0.1
  • libconfig-inifiles-perl Ubuntu 26.04 LTS 3.000003-4ubuntu0.1

ubuntu advisories UBUNTU-CVE-2026-11527

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • perl-Config-IniFiles SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 2.94-150000.3.3.1
  • perl-Config-IniFiles SLES for SAP applications 16.0, SLES 16.0 3.000003-160000.3.1
  • perl-Config-IniFiles SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 2.82-5.3.1

suse advisories SUSE-SU-2026:2710-1SUSE-SU-2026:2709-1SUSE-SU-2026:22329-1

  • perl-Config-IniFiles openSUSE Leap 16.0 3.000003-160000.3.1

opensuse advisories openSUSE-SU-2026:21012-1

  • perl-config-inifiles Alpine 3.24, Alpine 3.23, Alpine 3.22 +1 more 3.002000-r0

alpine advisories ALPINE-CVE-2026-11527

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-11527 updated cvss 8.6

Config-Inifiles: Config::IniFiles: OS command injection and file overwrite via untrusted file argument

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
4 mo ago

Exploit prediction

1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.6 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CNA 3.1 8.6 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

  • SHLOMIF Config::IniFiles

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-73 External Control of File Name or Path

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.