CVE-2026-124575 SiteServer SSCMS Admin-Login CAPTCHA LoginController.Submit.cs LoginController.Submit excessive authentication
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-124575?
CVE-2026-124575 is a medium-severity vulnerability in SiteServer SSCMS, published on 9 Nov 2026.
Official description
A vulnerability was identified in SiteServer SSCMS up to 7.1.3/7.2.1/7.4.0. This issue affects the function LoginController.Submit of the file src/SSCMS.Web/Controllers/Admin/LoginController.Submit.cs of the component Admin-Login CAPTCHA. Such manipulation of the argument isForceLogoutAndLogin leads to improper restriction of excessive authentication attempts. It is possible to launch the attack remotely. A high complexity level is associated with this attack. The exploitability is assessed as difficult. The name of the patch is df3becb7ebb00a48435418a44fd08a459eb38ace. Applying a patch is advised to resolve this issue.
Which versions are affected by CVE-2026-124575?
How do I fix CVE-2026-124575?
No fix has been published for CVE-2026-124575 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-124575 being exploited?
There is no known exploitation of CVE-2026-124575 in the wild and no public exploit code.
Sources
Also known as GHSA-v7j8-qp7g-hgm2.