CVE-2006-6383

Exp

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.

Published: 2006-12-10 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-6383 is rated Exploit Available (54.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.05%). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2006-6383

EDB-ID Source Kind Published Link
29239 exploit_db edb 2006-12-08 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2006-6383

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.40% 1.05% +0.65%
2 2026-05-29 0.53% 0.40% -0.14%
3 2026-04-22 — 0.53% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-6383

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2006-6383

OS Trackers for CVE-2006-6383

vendor priority summary link
alpine — CVE-2006-6383: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-6383
redhat — — https://access.redhat.com/security/cve/CVE-2006-6383
ubuntu medium CVE-2006-6383 medium priority: Ubuntu including 1 source packages (php4), 9 status rows across 9 suites (dapper, edgy, feisty, gutsy, hardy, intrepid, jaunty, karmic, upstream): DNE 6, ignored 2, needs-triage 1. https://ubuntu.com/security/CVE-2006-6383

Vendor comments (NVD) for CVE-2006-6383

  • Red Hat (2006-12-19T00:00:00)

    We do not consider these to be security issues. For more details see http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169857#c1 and http://www.php.net/security-note.php

Affected software / configurations for CVE-2006-6383

Vendor Product Version Raw CPE
php php 4.4.0 cpe:2.3:a:php:php:4.4.0:*:*:*:*:*:*:*
php php 5.2.0 cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:*

References for CVE-2006-6383

cvelogic Threat Intelligence