CVE-2006-1821

Exp

Directory traversal vulnerability in index.php in ModX 0.9.1 allows remote attackers to read arbitrary files via a .. (dot dot) sequence and trailing NULL (%00) byte in the id parameter.

Published: 2006-04-18 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-1821 is rated High Exploit Risk (70.3/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 5.10%). 1 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-2006-1821

EDB-ID Source Kind Published Link
27649 exploit_db edb 2006-04-14 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2006-1821

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 2025-03-30 6.50% 5.10% -1.40%
2 2025-03-29 5.10% 6.50% +1.40%
3 2025-03-17 — 5.10% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-1821

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.4 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
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:N)
No availability impact.
 10.0 4.9 [email protected]

Weakness enumeration for CVE-2006-1821

NVD evaluator notes for CVE-2006-1821

Solution: To address this issue, the vendor has released a patch available at the following location: http://modxcms.com/forums/index.php/topic,3982.0.html

Affected software / configurations for CVE-2006-1821

Vendor Product Version Raw CPE
modxcms modxcms 0.9.1 cpe:2.3:a:modxcms:modxcms:0.9.1:*:*:*:*:*:*:*

References for CVE-2006-1821

cvelogic Threat Intelligence