CVE-2026-71317

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Source
https://cve.org/CVERecord?id=CVE-2026-71317
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71317.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-71317
Aliases
Published
2026-08-18T19:06:27.618Z
Modified
2026-08-21T03:30:17.705789670Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N CVSS Calculator
Summary
Lemur: Sub-CA creation never checks `AuthorityPermission` on the parent authority
Details

Lemur manages TLS certificate creation. Prior to 1.9.3, POST /api/1/authorities with type=subca did not require AuthorityPermission on the parent authority when ADMINONLYAUTHORITYCREATION was false. AssociatedAuthoritySchema resolved the caller-supplied parent and passed it through authority creation to cryptography-issuer, which used the parent authoritycertificate.private_key to sign a new intermediate. Any authenticated non-read-only user in that supported configuration could chain a sub-CA to an internal root for which the user held no role. The resulting intermediate could issue trusted certificates and its private key could be used outside Lemur, bypassing normal issuance controls. The fix checks AuthorityPermission on every supplied parent before invoking the issuer. This issue is fixed in version 1.9.3.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71317.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
8669011203ca3dd89d9e39bab9ef6850eca723f9
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-2026-71317.json"