CVE-2014-125112: Plack::Middleware::Session::Cookie versions through 0.21 for Perl allows remote code execution. Plack::Middle

Q: How do I fix CVE-2014-125112?

plack\: upgrade to 0.23. Exact commands for each OS are on this page.

Q: Is CVE-2014-125112 being exploited?

CVE-2014-125112 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2014-125112 affect?

CVE-2014-125112 affects plack\. Severity is critical (CVSS 9.8). Plack::Middleware::Session::Cookie versions through 0.21 for Perl allows remote code execution. Plack::Middleware::Session::Cookie versions through 0.21 has a security vulnerability where it allows an attacker to execute arbitrary code on

Q: How urgent is CVE-2014-125112?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2014-125112 is a critical-severity flaw (CVSS 9.8) affecting plack\. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Plack::Middleware::Session::Cookie versions through 0.21 for Perl allows remote code execution. Plack::Middleware::Session::Cookie versions through 0.21 has a security vulnerability where it allows an attacker to execute arbitrary code on the server during deserialization of the cookie data, when there is no secret used to sign the cookie.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 42%)
CISA exploited list	No
Weakness	CWE-565
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): CPANSec · Vendor: miyagawa

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 03:16 UTCPublished CVE record published
2026-06-17 00:04 UTCUpdated Record last modified

miyagawa plack\ UPGRADE

Affected: < 0.23

Fixed in: 0.23

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy plack || rpm -q plack || plack --version

2. UPGRADE to 0.23 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade plack

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade plack

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2014-125112?

plack\: upgrade to 0.23. Exact commands for each OS are on this page.

Is CVE-2014-125112 being exploited?

CVE-2014-125112 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2014-125112 affect?

CVE-2014-125112 affects plack\. Severity is critical (CVSS 9.8). Plack::Middleware::Session::Cookie versions through 0.21 for Perl allows remote code execution. Plack::Middleware::Session::Cookie versions through 0.21 has a security vulnerability where it allows an attacker to execute arbitrary code on

How urgent is CVE-2014-125112?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Perl vulnerabilities

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References

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