URL redirection to untrusted site ('Open Redirect') issue exists in Movable Type.

published 2025-08-20 last yr. modified 2026-06-17 4mo ago also EUVD-2025-25324

cvss: 4.3; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 11%
public exploits: 0; none known

URL redirection to untrusted site ('Open Redirect') issue exists in Movable Type. If this vulnerability is exploited, an invalid parameter may be inserted into the password reset page, which may lead to redirection to an arbitrary URL.

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CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: last yr. (2025-08-20)

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 11% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.0	4.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CNA	4.0	5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CNA	4.0	5.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

Six Apart Ltd. Movable Type (Software Edition)
Six Apart Ltd. Movable Type Advanced (Software Edition)
Six Apart Ltd. Movable Type Premium (Software Edition)
Six Apart Ltd. Movable Type Premium (Advanced Edition) (Software Edition)
Six Apart Ltd. Movable Type (Cloud Edition)
Six Apart Ltd. Movable Type Premium (Cloud Edition)

Classification

Weakness

CWE-601 URL Redirection to Untrusted Site

References

Sources

CVE List CVE-2025-55706
NVD CVE-2025-55706

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