MEDIUM GitHub
CVE-2026-53658
Fabric CA Developer's Guide: LDAP Injection via Unescaped Username in GetUser Filter
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
Affected Products
- go/github.com/hyperledger/fabric-ca <= 1.5.20
References
- https://github.com/advisories/GHSA-xghw-p77p-3r7x
- https://github.com/hyperledger/fabric-ca/security/advisories/GHSA-xghw-p77p-3r7x
- https://github.com/hyperledger/fabric-ca/commit/d379df823534d56dec0166a6da8f0415e3beee24
- https://github.com/advisories/GHSA-xghw-p77p-3r7x
This medium severity vulnerability was published on 2026-08-14 via GitHub. Affected: go/github.com/hyperledger/fabric-ca <= 1.5.20.
vulnfeed aggregates 10939 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.