CVE-2026-29856 Denial of service in n/a
Attackers can cause a Regular Expression Denial of Service in aaPanel via crafted input in VirtualHost configuration handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-29856?
CVE-2026-29856 is a high-severity denial of service vulnerability in n/a, published on 18 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue in the VirtualHost configuration handling/parser component of aaPanel v7.57.0 allows attackers to cause a Regular Expression Denial of Service (ReDoS) via a crafted input.
Weakness: CWE-400
Which versions are affected by CVE-2026-29856?
It affects 1 product.
Products include Aapanel Aapanel.
How do I fix CVE-2026-29856?
No fix has been published for CVE-2026-29856 yet. Limit exposure of the affected software until one is available.
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-2026-29856 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-29856 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-mjxw-242v-v9vm.