Medium severity5.4NVD Advisory· Published Feb 4, 2026· Updated Jun 17, 2026
CVE-2026-21393
CVE-2026-21393
Description
Movable Type contains a stored cross-site scripting vulnerability in Edit Comment. If crafted input is stored by an attacker, arbitrary script may be executed on a logged-in user's web browser. Note that Movable Type 7 series and 8.4 series, which are End-of-Life (EOL), are affected by the vulnerability as well.
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Affected products
1Patches
Vulnerability mechanics
References
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