Is github.com/hyperledger/fabric-ca affected by CVE-2026-53658?

Go github.com/hyperledger/fabric-ca is affected in <= 1.5.20.

Is CVE-2026-53658 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2026-53658

Q: Is CVE-2026-53658 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

Go · github.com/hyperledger/fabric-ca

Summary

Fabric CA Developer's Guide: LDAP Injection via Unescaped Username in GetUser Filter

Severity: medium
EPSS: 0.4% (p39)
CWE: CWE-90
Also known as: GHSA-xghw-p77p-3r7x
Published: 2026-08-14
Updated: 2026-08-14

Advisory details

When fabric-ca is configured with an LDAP backend, the username from HTTP Basic authentication is included in an LDAP uid search filter without proper escaping. An unauthenticated attacker with network access to the CA enrollment endpoint could exploit this to perform LDAP injection before password validation, and potentially steer authentication attempts toward a victim account.

Recommendation

All users of fabric-ca with an LDAP backend should update to a fixed version.
For users not using an LDAP backend, no action is required.

References

Related advisories

CVE-2026-47303 — high · NuGet/Microsoft.AspNetCore.Authentication.Negotiate
CVE-2026-46619 — high · Maven/org.openidentityplatform.openam:openam-auth-msisdn
CVE-2026-11748 — medium · Maven/com.linecorp.centraldogma:centraldogma-server-auth-shiro

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.