CVE-2005-4154: Unspecified vulnerability in PEAR installer 1.4.2 and earlier allows user-assisted attackers to execute arbitr

Q: How do I fix CVE-2005-4154?

pear: upgrade to newer than 1.4.2. Exact commands for each OS are on this page.

Q: Is CVE-2005-4154 being exploited?

CVE-2005-4154 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-2005-4154 affect?

CVE-2005-4154 affects pear. Severity is medium (CVSS 5.1). Unspecified vulnerability in PEAR installer 1.4.2 and earlier allows user-assisted attackers to execute arbitrary code via a crafted package that can execute code when the pear command is executed or when the Web/Gtk frontend is loaded.

Q: How urgent is CVE-2005-4154?

Priority 41/100. EPSS top 6%: very likely to be exploited

This month

MEDIUM 5.1UPGRADE

CVE-2005-4154 is a medium-severity flaw (CVSS 5.1) affecting pear. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in PEAR installer 1.4.2 and earlier allows user-assisted attackers to execute arbitrary code via a crafted package that can execute code when the pear command is executed or when the Web/Gtk frontend is loaded.

Why this priority

EPSS top 6%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	5.1 (Medium)
EPSS exploit chance	7.4% (top 6%)
CISA exploited list	No
Published	2005-12-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: php

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2005-12-11 02:03 UTCPublished CVE record published
2026-06-16 22:18 UTCUpdated Record last modified

php pear UPGRADE

Affected: <= 1.4.2 · 0.9 · 0.10 · 0.11 · 0.90 · 1.0 · 1.0.1 · 1.1

Fixed in: newer than 1.4.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.4.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade pear

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-2005-4154?

pear: upgrade to newer than 1.4.2. Exact commands for each OS are on this page.

Is CVE-2005-4154 being exploited?

CVE-2005-4154 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-2005-4154 affect?

CVE-2005-4154 affects pear. Severity is medium (CVSS 5.1). Unspecified vulnerability in PEAR installer 1.4.2 and earlier allows user-assisted attackers to execute arbitrary code via a crafted package that can execute code when the pear command is executed or when the Web/Gtk frontend is loaded.

How urgent is CVE-2005-4154?

Priority 41/100. EPSS top 6%: very likely to be exploited

Software pages

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References

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