CVE-2026-76646 Apache MyFaces: Denial of Service via Unbounded Request Parsing
Remote attackers can cause denial of service in Apache MyFaces by sending crafted request parameters that trigger excessive resource consumption.
- 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-2026-76646?
CVE-2026-76646 is a high-severity denial of service vulnerability in Apache MyFaces, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A remote attacker could cause excessive resource consumption by supplying specially crafted request parameters, potentially resulting in a denial of service condition.
Older unsupported versions may also be affected.
Users are recommended to upgrade to versions 2.3.12, 2.3-next-M9, 3.0.4, 4.0.4, or 4.1.4, which fix this issue.
Weakness: CWE-400
Which versions are affected by CVE-2026-76646?
How do I fix CVE-2026-76646?
No fix has been published for CVE-2026-76646 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-2026-76646 being exploited?
There is no known exploitation of CVE-2026-76646 in the wild and no public exploit code.
Sources
Also known as GHSA-3h23-h733-q43f.