Improper input validation in Capgo
CVE-2026-56228
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Capgo — versions 0, 12.128.2
Weakness classification (CWE)
References
- github.com/Cap-go/capgo/security/advisories/GHSA-vhjp-62qf-33mx (vendor-advisory)
- www.vulncheck.com/advisories/capgo-denial-of-service-via-improper-password-poli… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-56228?
- CVE-2026-56228 is a medium-severity vulnerability in Capgo, classified under Improper Input Validation. CVSS score: 4.9/10. Published 2026-06-20.
- How severe is CVE-2026-56228?
- Medium severity. CVSS v3 base score is 4.9 out of 10.