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Movabletype CVE-2012-1262

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2012-03-03 cve@mitre.org
XSS Movabletype Movable Type Open Source Movable Type Enterprise Movable Type Advanced Movable Type Pro
4.3
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-79
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, M complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 0.85%.
Exploit ScenarioDerived

A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.8% exploitation probability (EPSS)

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AnalysisAI

Cross-site scripting (XSS) vulnerability in cgi-bin/mt/mt-wizard.cgi in Movable Type before 4.38, 5.0x before 5.07, and 5.1x before 5.13, when the product is incompletely installed, allows remote. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross-site scripting (XSS) vulnerability in cgi-bin/mt/mt-wizard.cgi in Movable Type before 4.38, 5.0x before 5.07, and 5.1x before 5.13, when the product is incompletely installed, allows remote attackers to inject arbitrary web script or HTML via the dbuser parameter, a different vulnerability than CVE-2012-0318. Affected products include: Movabletype Movable Type Open Source, Movabletype Movable Type Enterprise, Movabletype Movable Type Advanced, Movabletype Movable Type Pro. Version information: before 4.38.

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Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
M
Confidentiality
None
Integrity
P
Availability
None

DescriptionCVE.org

Cross-site scripting (XSS) vulnerability in cgi-bin/mt/mt-wizard.cgi in Movable Type before 4.38, 5.0x before 5.07, and 5.1x before 5.13, when the product is incompletely installed, allows remote attackers to inject arbitrary web script or HTML via the dbuser parameter, a different vulnerability than CVE-2012-0318.

Threat Intelligence Overview

EPSS Score
0.8%
Top 25% exploitable
Exploit
POC
Public exploit code exists
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC Yes
EPSS 0.8%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

43
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +22
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting MEDIUM

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)CVE.org

cpe:2.3:a:movabletype:movable_type_open_source:*:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.0:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.0:beta:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.1:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.1:beta:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.01:beta:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.2:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.2:beta:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.3:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.23:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.25:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.26:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.31:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.32:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.33:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.34:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.35:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.36:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.261:*:*:*:*:*:*:*
cpe:2.3:a:movabletype:movable_type_open_source:4.361:*:*:*:*:*:*:*
+ 100 more

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References

Advisories & patches
PATCH http://www.movabletype.org/2012/02/movable_type_513_507_and_438_security_updates.html PATCH http://www.movabletype.org/documentation/appendices/release-notes/513.html REF http://jvn.jp/en/jp/JVN49836527/index.html REF http://jvndb.jvn.jp/jvndb/JVNDB-2012-000016 REF http://osvdb.org/79470 REF http://packetstormsecurity.org/files/110203/Movable-Type-Publishing-Platform-Cross-Site-Scripting.html REF http://seclists.org/fulldisclosure/2012/Feb/407 REF http://www.debian.org/security/2012/dsa-2423 REF http://www.securityfocus.com/bid/52138 REF http://www.securitytracker.com/id?1026738 REF https://exchange.xforce.ibmcloud.com/vulnerabilities/73411 REF https://exchange.xforce.ibmcloud.com/vulnerabilities/73480

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