CVE-2026-82486 SiteServer SSCMS Agent Installation Workflow access control
Attackers can bypass access controls in the Agent Installation Workflow by manipulating the SecurityKey argument, potentially gaining unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-82486?
CVE-2026-82486 is a low-severity missing authorization vulnerability in SiteServer SSCMS, published on 30 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability was found in SiteServer SSCMS 7.4.0. Affected by this issue is some unknown functionality of the component Agent Installation Workflow. Performing a manipulation of the argument SecurityKey results in improper access controls. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitation is known to be difficult. The project was informed of the problem early through an issue report but has not responded yet.
Which versions are affected by CVE-2026-82486?
How do I fix CVE-2026-82486?
No fix has been published for CVE-2026-82486 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-82486 being exploited?
There is no known exploitation of CVE-2026-82486 in the wild and no public exploit code.
Sources
Also known as GHSA-v975-p34v-4fvr.