CVE-2025-41075: LimeSurvey · Infinite Loop
Affects LimeSurveySource GCVE Database
Not known to be exploited · CVSS 6.9 Medium.
Data as of 13 Nov 2026, 21:03 UTC
Thin evidence
One scorer or none| CNA (INCIBE) | CVSS 4.0 | 6.9 |
|---|
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 20 Nov 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LimeSurvey LimeSurvey | Affected
| Fixed in– |
AI-suggested
Users should monitor vendor advisories for updates. Until a fix is released, avoid direct access to the /optin endpoint or implement network-level protections to limit repeated requests to this endpoint.
Description
LimeSurvey version 6.13.0 contains a vulnerability in the /optin endpoint that causes infinite HTTP redirects when accessed directly. This infinite redirect loop can be exploited to cause a Denial of Service (DoS) attack by exhausting server or client resources, leading to service degradation or browser instability.