What is CVE-2020-5623?

CVE-2020-5623 is a medium-severity vulnerability in Nitori, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2020-08-28.

How severe is CVE-2020-5623?

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

Open Redirect in Nitori

CVE-2020-5623

NITORI App for Android versions 6.0.4 and earlier and NITORI App for iOS versions 6.0.2 and earlier allow remote attackers to lead a user to access an arbitrary website via the vulnerable App. As a result, the user may become a victim of a phishing attack.

Vulnerability class: Open Redirect

Published 2020-08-28 · 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: 0.008 (56.3th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Nitori
Nitori Holdings Co., Ltd. App For Android And iOS — versions NITORI App for Android versions 6.0.4 and earlier and NITORI App for iOS versions 6.0.2 and earlier

Weakness classification (CWE)

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

References

jvn.jp/en/jp/JVN77402327/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2020-5623?: CVE-2020-5623 is a medium-severity vulnerability in Nitori, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2020-08-28.
How severe is CVE-2020-5623?: Medium severity. CVSS v3 base score is 6.1 out of 10.