CVE-2026-56228
CVE-2026-56228 is a medium-severity vulnerability with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.
Key facts
- Severity: Medium (CVSS 3.x base score 4.9)
- CVSS v4: 6.9
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-38116
- Weakness: CWE-20
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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.
- How severe is CVE-2026-56228?
- CVE-2026-56228 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-56228 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-56228?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-56228 have an EU (EUVD) identifier?
- Yes. CVE-2026-56228 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38116.
- When was CVE-2026-56228 published?
- CVE-2026-56228 was published on 2026-06-20 and last updated on 2026-06-23.
References
- https://github.com/Cap-go/capgo/security/advisories/GHSA-vhjp-62qf-33mx
- https://www.vulncheck.com/advisories/capgo-denial-of-service-via-improper-password-policy-length-validation
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