https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-05T19:22:27.926019+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/fkie_cve-2026-53658 fkie_cve-2026-53658 2026-10-05T19:22:27.928410+00:00

Fabric CA is a Certificate Authority for Hyperledger Fabric. Prior to 1.5.21, when fabric-ca is configured with an LDAP backend, Client.GetUser in lib/server/ldap/client.go inserts the username from HTTP Basic authentication into the LDAP uid search UserFilter without escaping LDAP metacharacters. An unauthenticated attacker with network access to the CA enrollment endpoint can alter the LDAP search before password validation and potentially steer authentication attempts toward a victim account. Deployments that do not use an LDAP backend are unaffected. This issue is fixed in version 1.5.21.

 https://vulnerability.circl.lu/vuln/ghsa-xghw-p77p-3r7x GHSA-xghw-p77p-3r7x — Fabric CA Developer's Guide: LDAP Injection via Unescaped Username in GetUser Filter 2026-10-05T19:22:27.928486+00:00

Affected: Go: github.com/hyperledger/fabric-ca

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.