CVE-2006-3016: Unspecified vulnerability in session.c in PHP before 5.1.3 has unknown impact and attack vectors, related to "

Q: How do I fix CVE-2006-3016?

php: upgrade to newer than 5.1.2. Exact commands for each OS are on this page.

Q: Is CVE-2006-3016 being exploited?

CVE-2006-3016 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-2006-3016 affect?

CVE-2006-3016 affects php. Severity is high (CVSS 9.3). Unspecified vulnerability in session.c in PHP before 5.1.3 has unknown impact and attack vectors, related to "certain characters in session names," including special characters that are frequently associated with CRLF injection, SQL injecti

Q: How urgent is CVE-2006-3016?

Priority 59/100. Critical severity; Public exploit reference

This month

HIGH 9.3UPGRADE

CVE-2006-3016 is a high-severity flaw (CVSS 9.3) affecting php. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified vulnerability in session.c in PHP before 5.1.3 has unknown impact and attack vectors, related to "certain characters in session names," including special characters that are frequently associated with CRLF injection, SQL injection, cross-site scripting (XSS), and HTTP response splitting vulnerabilities. NOTE: while the nature of the vulnerability is unspecified, it is likely that this is related to a violation of an expectation by PH

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.3 (High)
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Published	2006-06-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: php group

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

Am I affected?

Timeline

2006-06-14 23:02 UTCPublished CVE record published
2026-06-16 22:26 UTCUpdated Record last modified

php group php UPGRADE

Affected: <= 5.1.2

Fixed in: newer than 5.1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 5.1.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade php

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-2006-3016?

php: upgrade to newer than 5.1.2. Exact commands for each OS are on this page.

Is CVE-2006-3016 being exploited?

CVE-2006-3016 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-2006-3016 affect?

CVE-2006-3016 affects php. Severity is high (CVSS 9.3). Unspecified vulnerability in session.c in PHP before 5.1.3 has unknown impact and attack vectors, related to "certain characters in session names," including special characters that are frequently associated with CRLF injection, SQL injecti

How urgent is CVE-2006-3016?

Priority 59/100. Critical severity; Public exploit reference

Software pages

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References

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