What is CVE-2019-6025?

CVE-2019-6025 is a medium-severity vulnerability in Sixapart Movable Type, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2019-12-26.

How severe is CVE-2019-6025?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Sixapart Movable Type

CVE-2019-6025

Open redirect vulnerability in Movable Type series Movable Type 7 r.4602 (7.1.3) and earlier (Movable Type 7), Movable Type 6.5.0 and 6.5.1 (Movable Type 6.5), Movable Type 6.3.9 and earlier (Movable Type 6.3.x, 6.2.x, 6.1.x, 6.0.x), Movable Type Advanced 7 r.4602 (7.1.3) and earlier (Movable Type 7), Movable Type Advanced 6.5.0 and 6.5.1 (Movable Type 6.5), Movable Type Advanced 6.3.9 and earlier (Movable Type 6.3.x, 6.2.x, 6.1.x, 6.0.x), Movable Type Premium 1.24 and earlier (Movable Type Premium), and Movable Type Premium (Advanced Edition) 1.24 and earlier (Movable Type Premium) allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a specially crafted URL.

Vulnerability class: Open Redirect

Published 2019-12-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (56.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Sixapart Movable Type — versions 6.5.0, 6.5.1
Six Apart Ltd Movable Type Series — versions Movable Type 7 r.4602 (7.1.3) and earlier (Movable Type 7), Movable Type 6.5.0 and 6.5.1 (Movable Type 6.5), Movable Type 6.3.9 and earlier (Movable Type 6.3.x, 6.2.x, 6.1.x, 6.0.x), Movable Type Advanced 7 r.4602 (7.1.3) and earlier (Movable Type 7), Movable Type Advanced 6.5.0 and 6.5.1 (Movable Type 6.5), Movable Type Advanced 6.3.9 and earlier (Movable Type 6.3.x, 6.2.x, 6.1.x, 6.0.x), Movable Type Premium 1.24 and earlier (Movable Type Premium), and Movable Type Premium (Advanced Edition) 1.24 and earlier (Movable Type Premium)

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

movabletype.org/news/2019/11/movable_type_r4603_v714_v652_and_v6310_released.ht… (Vendor Advisory)
jvn.jp/en/jp/JVN65280626/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2019-6025?: CVE-2019-6025 is a medium-severity vulnerability in Sixapart Movable Type, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2019-12-26.
How severe is CVE-2019-6025?: Medium severity. CVSS v3 base score is 6.1 out of 10.