What is CVE-2025-4296?

CVE-2025-4296 is a medium-severity vulnerability in Hotelrunner B2b, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2025-07-23.

How severe is CVE-2025-4296?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Open Redirect in Hotelrunner B2b

CVE-2025-4296

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in HotelRunner B2B allows Forceful Browsing. This issue affects B2B: before 04.06.2025.

Vulnerability class: Open Redirect

Published 2025-07-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (9.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 9th percentile — 9.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Hotelrunner B2b — versions 0

Weakness classification (CWE)

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

References

www.usom.gov.tr/bildirim/tr-25-0169 (government-resource, broken-link, third-party-advisory)
siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-25-0169 (government-resource)

Frequently asked questions

What is CVE-2025-4296?: CVE-2025-4296 is a medium-severity vulnerability in Hotelrunner B2b, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 4.7/10. Published 2025-07-23.
How severe is CVE-2025-4296?: Medium severity. CVSS v3 base score is 4.7 out of 10.