What is CVE-2025-41075?

CVE-2025-41075 is a high-severity vulnerability in Limesurvey, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2025-11-20.

How severe is CVE-2025-41075?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Limesurvey

CVE-2025-41075

Vulnerability in LimeSurvey 6.13.0 in the endpoint /optin that causes infinite HTTP redirects when accessed directly. This behavior can be exploited to generate a Denegation of Service (DoS attack), by exhausting server or client resources. The system is unable to break the redirect loop, which can cause service degradation or browser instability.

EPSS: 0.003 (22.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Limesurvey — versions 6.13.0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

cve-coordination@incibe.es (Third Party Advisory)

Frequently asked questions

What is CVE-2025-41075?: CVE-2025-41075 is a high-severity vulnerability in Limesurvey, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2025-11-20.
How severe is CVE-2025-41075?: High severity. CVSS v3 base score is 7.5 out of 10.