CVE-2006-6383: n/a vulnerability

CVE-2006-6383: PHP 5.2.0 and 4.4 allows local users to bypass safe_mode and open_basedir restrictions via a malicious path...

PHP 5.2.0 and 4.4 allows local users to bypass safe_mode and open_basedir restrictions via a malicious path and a null byte before a ";" in a session_save_path argument, followed by an allowed path, which causes a parsing inconsistency in which PHP validates the allowed path but sets session.save_path to the malicious path.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 20:26 UTC (UTC+00:00)

Security readout for executives and security teams

This is an old PHP isolation bypass affecting PHP 5.2.0 and 4.4 configurations that relied on safe_mode or open_basedir. A local user could cause PHP to validate one permitted path but use a different session storage path, weakening shared-hosting or multi-tenant controls. Exposure is most likely in obsolete PHP 4.4 or 5.2.0 deployments, especially shared hosting or legacy applications depending on safe_mode/open_basedir for tenant separation. Modern PHP deployments are unlikely to be directly exposed because these versions are long unsupported. Treat this as a legacy-platform risk rather than a broad current emergency. Prioritize any internet-facing or shared-hosting systems still running PHP 4.4 or 5.2.0 because the affected controls were meant to restrict cross-tenant file access. Mitigation focus: Identify and retire PHP 4.4 and PHP 5.2.0 systems.; Apply vendor PHP updates referenced by distribution advisories.; Do not rely on safe_mode/open_basedir as primary isolation controls..

Prepared: Jun 29, 2026, 08:58 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 10, 2006, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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1Source links

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Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

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