What is CVE-2022-45113?

CVE-2022-45113 is a medium-severity vulnerability in Sixapart Movable Type, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2022-12-07.

How severe is CVE-2022-45113?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Sixapart Movable Type

CVE-2022-45113

Improper validation of syntactic correctness of input vulnerability exist in Movable Type series. Having a user to access a specially crafted URL may allow a remote unauthenticated attacker to set a specially crafted URL to the Reset Password page and conduct a phishing attack. Affected products/versions are as follows: Movable Type 7 r.5301 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.5301 and earlier (Movable Type Advanced 7 Series), Movable Type 6.8.7 and earlier (Movable Type 6 Series), Movable Type Advanced 6.8.7 and earlier (Movable Type Advanced 6 Series), Movable Type Premium 1.53 and earlier, and Movable Type Premium Advanced 1.53 and earlier.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2022-12-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Sixapart Movable Type
Six Apart Ltd. Movable Type — versions Movable Type 7 r.5301 and earlier (Movable Type 7 Series), Movable Type Advanced 7 r.5301 and earlier (Movable Type Advanced 7 Series), Movable Type 6.8.7 and earlier (Movable Type 6 Series), Movable Type Advanced 6.8.7 and earlier (Movable Type Advanced 6 Series), Movable Type Premium 1.53 and earlier, and Movable Type Premium Advanced 1.53 and earlier

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

movabletype.org/news/2022/11/mt-796-688-released.html (Release Notes, Vendor Advisory)
jvn.jp/en/jp/JVN37014768/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2022-45113?: CVE-2022-45113 is a medium-severity vulnerability in Sixapart Movable Type, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2022-12-07.
How severe is CVE-2022-45113?: Medium severity. CVSS v3 base score is 6.5 out of 10.