CVE-2026-53658

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Source
https://cve.org/CVERecord?id=CVE-2026-53658
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53658.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53658
Aliases
Downstream
Related
Published
2026-09-15T16:37:14Z
Modified
2026-09-18T03:30:56Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Fabric CA: LDAP Injection via Unescaped Username in GetUser Filter
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-90"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53658.json"
}
References

Affected packages

Git / github.com/hyperledger/fabric-ca

Affected ranges

Type
GIT
Repo
https://github.com/hyperledger/fabric-ca
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
d379df823534d56dec0166a6da8f0415e3beee24
Fixed
f355456a72323ae2a4a250fdecb8744a8c041150
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.5.21"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v1.*
v1.0.0
v1.0.0-beta
v1.0.0-rc1
v1.1.0-alpha
v1.1.0-preview
v1.1.0-rc1
v1.2.0-rc1
v1.3.0-rc1
v1.4.0-rc1
v1.5.0
v1.5.1
v1.5.10
v1.5.11
v1.5.12
v1.5.13
v1.5.14
v1.5.15
v1.5.16
v1.5.17
v1.5.18
v1.5.19
v1.5.2
v1.5.20
v1.5.3
v1.5.4
v1.5.5
v1.5.6
v1.5.6-beta
v1.5.6-beta2
v1.5.6-beta3
v1.5.7
v1.5.8
v1.5.9
v2.*
v2.0.0-alpha

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53658.json"