CVE-2006-1821

NONECVSS 0.0Weaponized

0.0

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.

CVSS v3: —
EG Score: —
EPSS: 90.0%
KEV: Not listed

Published

April 18, 2006

Last Modified

April 16, 2026

References (12)

cve@mitrehttp://secunia.com/advisories/19645
cve@mitrehttp://securitytracker.com/id?1015940
cve@mitrehttp://www.securityfocus.com/archive/1/431010/100/0/threaded
cve@mitrehttp://www.securityfocus.com/bid/17533
cve@mitrehttp://www.vupen.com/english/advisories/2006/1383
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/25895
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/19645
af854a3a-2127-422b-91ae-364da2661108http://securitytracker.com/id?1015940
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/431010/100/0/threaded
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/17533
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2006/1383
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/25895

Data Freshness Timeline

(refreshed 10× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
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2026-05-18 21:29 UTCepss_batch

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-27649✓ verified
First seen Apr 14, 2006
MODx CMS 0.9.1 - 'index.php' Directory Traversal
Open source ↗

Frequently asked(4)

What is CVE-2006-1821?

CVE-2006-1821 is a none vulnerability published on April 18, 2006. 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.

When was CVE-2006-1821 disclosed?

CVE-2006-1821 was first published in the National Vulnerability Database on April 18, 2006, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2006-1821 actively exploited?

CVE-2006-1821 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2006-1821?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2006-1821, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2006-1821

📅 Published

🔄 Last Modified

🔗 References (12)