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CWE-73Weakness · CWE-73

CVE-2026-11527

HIGH · 8.6 CVSS v3.1 Published 2026-06-14
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
89/100
Remediation priority · High
No privileges Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix High confidence

perl-Config-IniFiles version 3.001000 or later

  1. Upgrade perl-Config-IniFiles to version 3.001000 or later. If using a system package manager, check for available updates: 'cpan -i Config::IniFiles' or 'cpanm Config::IniFiles' for Perl module installation.
  2. If a vendor patch is required instead of upgrading, apply the patch from GitHub commit 3e48f9627fbba4dae5de35be1f735cdeb7e47fb8 which replaces 2-arg open() with safer 3-arg open() or IO::File->new_tmpfile for temporary handling.
  3. After upgrading or patching, verify that any code passing user-controlled input to the -file parameter is not vulnerable. Review code using 'new(-file => $untrusted_input)' and ensure input validation or the upgrade is applied.
  4. Test the application to confirm Config::IniFiles functionality works correctly with the updated module.
Caveat Major version upgrades to Config::IniFiles may introduce API changes; review the module changelog for any breaking changes between your current version and 3.001000

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-11527 in production — separate from our analysis above.

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