| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-v2wp-frmc-5q3v | Lemur: ACME SSRF + creator-equality IDOR lead to AWS IAM/PKI compromise |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Tue, 18 Aug 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Netflix
Netflix lemur |
|
| Vendors & Products |
Netflix
Netflix lemur |
Tue, 18 Aug 2026 20:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Tue, 18 Aug 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Lemur manages TLS certificate creation. Prior to 1.9.2, authenticated users could influence an ACME authority acme_url without an effective server-side destination restriction and trigger AcmeHandler.setup_acme_client to make backend requests. An attacker could target cloud instance metadata or internal services from Lemur network context, potentially obtaining credentials available to the host. The advisory also identifies creator-equality authorization behavior that could preserve access to certificate key material after ownership or role changes, with insufficient export_private_key audit context to distinguish that access path. Together, the acme_url server-side request forgery and authorization weakness could expose cloud credentials and long-lived PKI private-key access. The fix adds ACME_DIRECTORY_HOST_ALLOWLIST validation and enriches key-export audit events with creator and current-owner context. This issue is fixed in version 1.9.2. | |
| Title | Lemur: any SSO-authenticated user achieves AWS IAM compromise and permanent PKI key access via ACME acme_url SSRF and creator-equality IDOR | |
| Weaknesses | CWE-285 CWE-639 CWE-918 |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-08-18T19:34:19.740Z
Reserved: 2026-06-16T15:13:28.166Z
Link: CVE-2026-55166
Updated: 2026-08-18T19:34:16.199Z
Status : Received
Published: 2026-08-18T19:16:58.783
Modified: 2026-08-18T20:17:19.073
Link: CVE-2026-55166
No data.
OpenCVE Enrichment
Updated: 2026-08-18T20:45:04Z
Github GHSA