CVE-2026-48508

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-48508
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48508.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48508
Aliases
Published
2026-08-18T18:03:08.944Z
Modified
2026-08-20T03:30:11.312988305Z
Severity
  • 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Lemur: Authorization bypass in StrictRolePermission / AuthorityCreatorPermission
Details

Lemur manages TLS certificate creation. Prior to 1.9.1, StrictRolePermission and AuthorityCreatorPermission in lemur/auth/permissions.py call flaskprincipal.Permission.init() with zero Need objects when ADMINONLYAUTHORITYCREATION and LEMURSTRICTROLEENFORCEMENT are unset because both flags default to False. Flask-Principal Permission.allows() returns True when self.needs is empty, so the .can() authorization gate permits every authenticated identity, including the read-only role. A read-only user can access POST /api/1/authorities, POST /api/1/certificates/upload, POST /api/1/pendingcertificates//upload, POST /api/1/notifications, PUT or DELETE /api/1/notifications/, and POST /api/1/domains to create root Certificate Authorities, upload arbitrary certificates, create or edit notifications that reach an SSRF sink, and create domain entries. Explicitly setting either flag to False continues to opt into the permissive behavior. This issue is fixed in version 1.9.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48508.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
e6a41e2c1b2028840d19039b06895524a19ad36f
Fixed
f478458d3213f4c185238821c6808a68a7f56277
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.9.1"
        }
    ],
    "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

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48508.json"