CVE-2026-25776: Code injection in Six Apart Ltd. Movable Type
A critical code injection vulnerability (CVE-2026-25776) exists in Six Apart Ltd. 's Movable Type version 9. 1. 0 and earlier. This flaw allows an unauthenticated attacker to execute arbitrary Perl scripts on the affected system. The vulnerability has a high CVSS score of 9. 8, indicating severe impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently documented. There are no known exploits in the wild at this time. Users of affected versions should monitor vendor advisories for updates and apply patches once available.
AI Analysis
Technical Summary
CVE-2026-25776 is a critical code injection vulnerability in Six Apart Ltd.'s Movable Type software versions 9.1.0 and earlier. It permits remote attackers to execute arbitrary Perl code without authentication, potentially leading to full system compromise. The vulnerability is rated with a CVSS 3.0 score of 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. As of the published date, no official remediation or patch has been disclosed by the vendor.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary Perl scripts, which can lead to complete compromise of the affected system, including unauthorized data access, modification, and denial of service. The critical CVSS score of 9.8 underscores the severity of this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting access to the Movable Type application and monitor for suspicious activity. Avoid exposing the application to untrusted networks where possible.
CVE-2026-25776: Code injection in Six Apart Ltd. Movable Type
Description
A critical code injection vulnerability (CVE-2026-25776) exists in Six Apart Ltd. 's Movable Type version 9. 1. 0 and earlier. This flaw allows an unauthenticated attacker to execute arbitrary Perl scripts on the affected system. The vulnerability has a high CVSS score of 9. 8, indicating severe impact on confidentiality, integrity, and availability. No official patch or remediation guidance is currently documented. There are no known exploits in the wild at this time. Users of affected versions should monitor vendor advisories for updates and apply patches once available.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-25776 is a critical code injection vulnerability in Six Apart Ltd.'s Movable Type software versions 9.1.0 and earlier. It permits remote attackers to execute arbitrary Perl code without authentication, potentially leading to full system compromise. The vulnerability is rated with a CVSS 3.0 score of 9.8, reflecting network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability. As of the published date, no official remediation or patch has been disclosed by the vendor.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary Perl scripts, which can lead to complete compromise of the affected system, including unauthorized data access, modification, and denial of service. The critical CVSS score of 9.8 underscores the severity of this vulnerability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting access to the Movable Type application and monitor for suspicious activity. Avoid exposing the application to untrusted networks where possible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- jpcert
- Date Reserved
- 2026-03-26T01:06:12.957Z
- Cvss Version
- 3.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69d61a8c1cc7ad14da4e089b
Added to database: 4/8/2026, 9:06:20 AM
Last enriched: 4/15/2026, 4:00:23 PM
Last updated: 5/23/2026, 9:22:14 AM
Views: 118
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