CVE-2026-53658

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/hyperledger/fabric-ca/commit/d379df823534d56dec0166a6da8f0415e3beee24
https://github.com/hyperledger/fabric-ca/pull/501
https://github.com/hyperledger/fabric-ca/releases/tag/v1.5.21
https://github.com/hyperledger/fabric-ca/security/advisories/GHSA-xghw-p77p-3r7x

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 17:17

Updated : 2026-09-15 17:17

NVD link : CVE-2026-53658

Mitre link : CVE-2026-53658

CVE.ORG link : CVE-2026-53658

JSON object : View

Products Affected

No product.

CWE

CWE-90

Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')

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