CVE-2026-71417

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Source
https://cve.org/CVERecord?id=CVE-2026-71417
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71417.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-71417
Aliases
Published
2026-08-18T19:12:16Z
Modified
2026-09-10T03:30:57Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H CVSS Calculator
Summary
Lemur: Any user can revoke arbitrary certificates at the CA by uploading a duplicate record and revoking it
Details

Lemur manages TLS certificate creation. Prior to 1.9.3, POST /api/1/certificates/upload allowed a non-read-only user to create a duplicate row using another certificate body, authority_id, serial, or external_id without requiring permission on the underlying authority. PUT /api/1/certificates//revoke authorized the caller against only the selected Lemur row, so the creator of the duplicate bypassed CertificatePermission. The duplicate had no cert.endpoints, which also bypassed the safeguard that prevents revocation of deployed certificates. Issuer plugins then revoked the real CA-side certificate using certificate.body or external_id under the stored authority credentials. An attacker could therefore revoke arbitrary managed certificates and cause fleet-wide TLS denial of service. The fix rejects duplicate authority_id and serial identities, requires authority access on upload, and checks every matching row during revocation. This issue is fixed in version 1.9.3.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71417.json"
}
References

Affected packages

Git / github.com/netflix/lemur

Affected ranges

Type
GIT
Repo
https://github.com/netflix/lemur
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
851389ae737a6d6bf16c1f9ca64a2ce56c1cc5c6
Fixed
726506d15a6da8d9bcf5c39b4dc0c95535cf03c0
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.9.3"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.1
0.1.2
0.1.3
0.1.4
0.1.5
0.2
0.2.1
0.2.2
0.3.0
0.4.0
0.5.0
0.6.0
0.7.0
0.8.0
v0.*
v0.10.0
v0.11.0
v0.8.1
v0.9.0
v1.*
v1.0.0
v1.1.0
v1.2.0
v1.3.0
v1.3.1
v1.3.2
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.8.1
v1.8.2
v1.9.0
v1.9.1
v1.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71417.json"