What is CVE-2023-41609?

CVE-2023-41609 is a medium-severity vulnerability in Couchcms, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2023-09-11.

How severe is CVE-2023-41609?

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

Open Redirect in Couchcms

CVE-2023-41609

An open redirect vulnerability in the sanitize_url() parameter of CouchCMS v2.3 allows attackers to redirect a victim user to an arbitrary web site via a crafted URL.

Vulnerability class: Open Redirect

Published 2023-09-11 · 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: 0.004 (32.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.001

Affected products

Couchcms — versions 2.3

Weakness classification (CWE)

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

References

github.com/CouchCMS/CouchCMS/issues/190 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-41609?: CVE-2023-41609 is a medium-severity vulnerability in Couchcms, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2023-09-11.
How severe is CVE-2023-41609?: Medium severity. CVSS v3 base score is 6.1 out of 10.