CVE-2026-56228 Capgo - Denial of Service via Improper Password Policy Length Validation
An authenticated admin can set an impossibly high minimum password length, locking out all users and causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56228?
CVE-2026-56228 is a medium-severity denial of service vulnerability in Capgo, published on 20 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Capgo before 12.128.2 fails to enforce a maximum value on the minimum password length field in its password policy configuration. An authenticated organization administrator can set an extremely large numeric value (e.g., billions of characters) as the minimum password length, making compliance impossible for all organization members. Once the policy is enabled, users (including administrators) are unable to change their passwords or access the organization, resulting in an organization-wide account lockout and application-level denial of service.
Weakness: CWE-20
Which versions are affected by CVE-2026-56228?
How do I fix CVE-2026-56228?
No fix has been published for CVE-2026-56228 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-2026-56228 being exploited?
There is no known exploitation of CVE-2026-56228 in the wild and no public exploit code.
Sources
Also known as GHSA-j8w3-fhfr-rrvp, GHSA-vhjp-62qf-33mx.