What is CVE-2021-45328?

CVE-2021-45328 is a medium-severity vulnerability in Gitea, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2022-02-08.

How severe is CVE-2021-45328?

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

Open Redirect in Gitea

CVE-2021-45328

Gitea before 1.4.3 is affected by URL Redirection to Untrusted Site ('Open Redirect') via internal URLs.

Vulnerability class: Open Redirect

Published 2022-02-08 · 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: 0.010 (59.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.8% 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: 0.010 · change: +0.000

Affected products

Gitea

Weakness classification (CWE)

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

References

blog.gitea.io/2018/06/release-of-1.4.3/ (Vendor Advisory)
github.com/go-gitea/gitea/issues/4332 (Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-45328?: CVE-2021-45328 is a medium-severity vulnerability in Gitea, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2022-02-08.
How severe is CVE-2021-45328?: Medium severity. CVSS v3 base score is 6.1 out of 10.