Open Redirect in Six Apart Ltd. Movable Type Advanced (Software Edition)
CVE-2025-55706
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.
Vulnerability class: Open Redirect
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (8.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 8.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Six Apart Ltd. Movable Type Advanced (Software Edition) — versions 8.0.0 to 8.0.6, 8.4.0 to 8.4.2 (8 series), 7 r.5508 and earlier (7 series)
- Six Apart Ltd. Movable Type (Cloud Edition) — versions 8.6.0 (8 series), 7 r.5508 (7 series)
- Six Apart Ltd. Movable Type Premium (Advanced Edition) (Software — versions 2.09 and earlier (2 series), 1.66 and earlier (1 series)
- Six Apart Ltd. Movable Type Premium (Cloud Edition) — versions 2.09 (2 series), 1.66 (1 series)
- Six Apart Ltd. Movable Type Premium (Software Edition) — versions 2.09 and earlier (2 series), 1.66 and earlier (1 series)
- Six Apart Ltd. Movable Type (Software Edition) — versions 8.0.0 to 8.0.6, 8.4.0 to 8.4.2 (8 series), 7 r.5508 and earlier (7 series)
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-55706?
- CVE-2025-55706 is a medium-severity vulnerability in Six Apart Ltd. Movable Type Advanced (Software Edition), classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.3/10. Published 2025-08-20.
- How severe is CVE-2025-55706?
- Medium severity. CVSS v3 base score is 4.3 out of 10.