CVE-2014-4330: The Dumper method in Data::Dumper before 2.154, as used in Perl 5.20.1 and earlier, allows context-dependent a

Q: How do I fix CVE-2014-4330?

perl: upgrade to newer than 5.20.1; data dumper: upgrade to newer than 2.151. Exact commands for each OS are on this page.

Q: Is CVE-2014-4330 being exploited?

CVE-2014-4330 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-2014-4330 affect?

CVE-2014-4330 affects perl, data dumper. Severity is low (CVSS 2.1). The Dumper method in Data::Dumper before 2.154, as used in Perl 5.20.1 and earlier, allows context-dependent attackers to cause a denial of service (stack consumption and crash) via an Array-Reference with many nested Array-References, whic

Q: How urgent is CVE-2014-4330?

Priority 24/100. Public exploit reference

Routine

LOW 2.1UPGRADEUPGRADE

CVE-2014-4330 is a low-severity flaw (CVSS 2.1) affecting perl, data dumper. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Dumper method in Data::Dumper before 2.154, as used in Perl 5.20.1 and earlier, allows context-dependent attackers to cause a denial of service (stack consumption and crash) via an Array-Reference with many nested Array-References, which triggers a large number of recursive calls to the DD_dump function.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	2.1 (Low)
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-119
Published	2014-09-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: data dumper project · perl

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

Am I affected?

Timeline

2014-09-30 16:55 UTCPublished CVE record published
2026-06-17 00:09 UTCUpdated Record last modified

perl perl UPGRADE

Affected: <= 5.20.1

Fixed in: newer than 5.20.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.20.1 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade perl

Note

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

data dumper project data dumper UPGRADE

Affected: <= 2.151

Fixed in: newer than 2.151

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy data-dumper || rpm -q data-dumper || data-dumper --version

2. UPGRADE to newer than 2.151 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade data-dumper

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade data-dumper

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-2014-4330?

perl: upgrade to newer than 5.20.1; data dumper: upgrade to newer than 2.151. Exact commands for each OS are on this page.

Is CVE-2014-4330 being exploited?

CVE-2014-4330 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-2014-4330 affect?

CVE-2014-4330 affects perl, data dumper. Severity is low (CVSS 2.1). The Dumper method in Data::Dumper before 2.154, as used in Perl 5.20.1 and earlier, allows context-dependent attackers to cause a denial of service (stack consumption and crash) via an Array-Reference with many nested Array-References, whic

How urgent is CVE-2014-4330?

Priority 24/100. Public exploit reference

Software pages

Perl vulnerabilities

Related CVEs

CVE-2026-13221 CRITICAL 9.1 UPGRADE Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.10 produce silently in
CVE-2026-57432 HIGH 8.4 UPGRADE Perl versions before 5.40.5-RC1, from 5.41.0 before 5.42.3-RC1, from 5.43.0 before 5.43.11 have an integer ove
CVE-2022-48522 CRITICAL 9.8 DOWNGRADE In Perl 5.34.0, function S_find_uninit_var in sv.c has a stack-based crash that can lead to remote code execut
CVE-2020-12723 HIGH 7.5 UPGRADE MITIGATE regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive
CVE-2020-10878 HIGH 8.6 UPGRADE MITIGATE Perl before 5.30.3 has an integer overflow related to mishandling of a "PL_regkind[OP(n)] == NOTHING" situatio

References

← Back to latest CVEs