CVE-2026-78701 389-ds-base: 389-ds-base: cve-2026-11610 incomplete fix may introduce a connection-stall dos
A remote authenticated attacker can cause a connection stall and resource exhaustion in 389-ds-base via a crafted SASL UNBIND request, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-78701?
CVE-2026-78701 is a medium-severity denial of service vulnerability in Red Hat Directory Server 11, published on 25 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A flaw was found in 389-ds-base. A remote, authenticated attacker could exploit a vulnerability in the Simple Authentication and Security Layer (SASL) UNBIND process. By sending a specially crafted request, the attacker can cause a connection to stall, leading to resource exhaustion and a Denial of Service (DoS) for the server.
Weakness: CWE-787
Which versions are affected by CVE-2026-78701?
How do I fix CVE-2026-78701?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-78701 being exploited?
There is no known exploitation of CVE-2026-78701 in the wild and no public exploit code.
Sources
Also known as AZL-98045, GHSA-xmh3-2gr9-2rwp, UBUNTU-CVE-2026-78701.