PYSEC-2026-3677 Lemur: Sub-CA creation never checks `AuthorityPermission` on the parent authority

Summary Repo under test: https://github.com/Netflix/lemur When ADMINONLYAUTHORITYCREATION=False an explicitly supported and documented configuration, POST /api/1/authorities with type=subca never verifies that the caller holds AuthorityPermission on the supplied parent authority. The parent field...

Lemur: Sub-CA creation never checks `AuthorityPermission` on the parent authority

SummaryRepo under test: https://github.com/Netflix/lemurWhen ADMINONLYAUTHORITYCREATION=False an explicitly supported and documented configuration, POST /api/1/authorities with type=subca never verifies that the caller holds AuthorityPermission on the supplied parent authority. The parent field i...

CVE-2026-70666

creationtimestamp| type| source ---|---|--- 2026-08-18 22:35:18+00:00| published-proof-of-concept| https://github.com/Netflix/lemur/security/advisories/GHSA-xpmj-wjcp-6pww 2026-08-19 09:32:00+00:00| seen| https://gist.github.com/alon710/f8eaee2020ed8f819add6f9d1de77bf8...

CVE-2026-70667

creationtimestamp| type| source ---|---|--- 2026-08-18 22:35:16+00:00| published-proof-of-concept| https://github.com/Netflix/lemur/security/advisories/GHSA-f3qq-49m6-rw8f 2026-08-19 08:31:37+00:00| seen| https://gist.github.com/alon710/db3f4019c2372dbb6dfede560d6093f7...

CVE-2026-71303

creationtimestamp| type| source ---|---|--- 2026-08-18 22:35:14+00:00| published-proof-of-concept| https://github.com/Netflix/lemur/security/advisories/GHSA-v5rc-cpwc-cfpr 2026-08-19 07:31:59+00:00| seen| https://gist.github.com/alon710/048e89a8b6d23388e5627d9e6207e2ad...

CVE-2026-71307

creationtimestamp| type| source ---|---|--- 2026-08-18 22:35:11+00:00| published-proof-of-concept| https://github.com/Netflix/lemur/security/advisories/GHSA-6c8m-q6g9-vrw3 2026-08-19 06:44:38+00:00| seen| https://gist.github.com/alon710/d3bb7a8e835fd653e6c886cd85f28aa2...

CVE-2026-71308

creationtimestamp| type| source ---|---|--- 2026-08-18 22:35:09+00:00| published-proof-of-concept| https://github.com/Netflix/lemur/security/advisories/GHSA-cfh6-pv5c-38jv 2026-08-19 01:22:20+00:00| seen| https://bsky.app/profile/thestandup.bsky.social/post/3mtfky2ijcb2v 2026-08-19 06:44:38+00:00...

CVE-2026-71317

creationtimestamp| type| source ---|---|--- 2026-08-18 22:35:07+00:00| published-proof-of-concept| https://github.com/Netflix/lemur/security/advisories/GHSA-g7p5-89mh-248h...

CVE-2026-71417

creationtimestamp| type| source ---|---|--- 2026-08-18 22:35:05+00:00| published-proof-of-concept| https://github.com/Netflix/lemur/security/advisories/GHSA-pxmc-2ffp-8j67...

GHSA-PXMC-2FFP-8J67 Lemur: Any user can revoke arbitrary certificates at the CA by uploading a duplicate record and revoking it

Summary Repo under test: https://github.com/Netflix/lemur PUT /api/1/certificates//revoke authorizes the caller against the Lemur database row creator == current user, or CertificatePermission over the row's roles rather than the underlying CA-side certificate identity. Separately, POST...

Lemur: Missing authorization check on POST /certificates/<id>/export for plugins with requires_key = False

Summary The CertificateExport handler in lemur/certificates/views.py nests its entire ownership / CertificatePermission check inside an if plugin.requireskey: branch. When the selected export plugin advertises requireskey = False, the authorization check is skipped entirely and any authenticated...

GHSA-4H97-P9WQ-CHQJ Lemur: Missing authorization check on POST /certificates/<id>/export for plugins with requires_key = False

Summary The CertificateExport handler in lemur/certificates/views.py nests its entire ownership / CertificatePermission check inside an if plugin.requireskey: branch. When the selected export plugin advertises requireskey = False, the authorization check is skipped entirely and any authenticated...

Lemur: Sub-CA creation never checks `AuthorityPermission` on the parent authority

Summary Repo under test: https://github.com/Netflix/lemur When ADMINONLYAUTHORITYCREATION=False an explicitly supported and documented configuration, POST /api/1/authorities with type=subca never verifies that the caller holds AuthorityPermission on the supplied parent authority. The parent field...

GHSA-G7P5-89MH-248H Lemur: Sub-CA creation never checks `AuthorityPermission` on the parent authority

Summary Repo under test: https://github.com/Netflix/lemur When ADMINONLYAUTHORITYCREATION=False an explicitly supported and documented configuration, POST /api/1/authorities with type=subca never verifies that the caller holds AuthorityPermission on the supplied parent authority. The parent field...

GHSA-CFH6-PV5C-38JV Lemur: Unchecked `replaces[]` lets any user silence notifications and hijack auto-rotation for arbitrary certificates

Summary Repo under test: https://github.com/Netflix/lemur The certificate create and upload endpoints accept a replaces alias replacements array that is resolved to live Certificate ORM objects with no ownership or CertificatePermission check on the referenced certificates. The SQLAlchemy...

GHSA-6C8M-Q6G9-VRW3 Lemur: Authenticated low-privilege users can read plaintext destination credentials (SFTP password / private-key passphrase) via the destinations API

Summary Lemur's destination read endpoints -- GET /api/1/destinations and GET /api/1/destinations/ -- return the full set of stored plugin option values to any authenticated user, with no authorization check and no redaction of secret-bearing options. The sibling write endpoints POST/PUT/DELETE a...

GHSA-V5RC-CPWC-CFPR Lemur: Incomplete fix for GHSA-v2wp-frmc-5q3v -- ACME authority update endpoint allows non-admin to replace `acme_url` with internal IP, bypassing allowlist

Summary The fix for GHSA-v2wp-frmc-5q3v added validateacmeurl to reject acmeurl values not in ACMEDIRECTORYHOSTALLOWLIST, but the validation is only called at authority creation time POST. The authority update endpoint PUT /api/1/authorities/ accepts and stores arbitrary options -- including a...

GHSA-F3QQ-49M6-RW8F Lemur: SSRF protection in certificate revocation checking bypassable via HTTP redirects and DNS rebinding (incomplete fix for GHSA-54vg-pfh7-jq95)

Summary The SSRF mitigation added for GHSA-54vg-pfh7-jq95 validaterevocationurl in lemur /certificates/verify.py can be bypassed. An operator-role user who uploads a certificate with attacker-controlled CRL/OCSP extensions can still make Lemur reach internal destinations RFC1918, loopback,...

Lemur: Server-Side Request Forgery via the ACME client following server-controlled URLs

Summary The ACME client used to issue certificates from Let's Encrypt / Google Public CA / private ACME CAs connects to an acmeurl, then issues requests to URLs that the ACME server returns in its directory/order/authorization/finalize responses - this is the classic ACME-client SSRF RFC 8555...

GHSA-XPMJ-WJCP-6PWW Lemur: Server-Side Request Forgery via the ACME client following server-controlled URLs

Summary The ACME client used to issue certificates from Let's Encrypt / Google Public CA / private ACME CAs connects to an acmeurl, then issues requests to URLs that the ACME server returns in its directory/order/authorization/finalize responses - this is the classic ACME-client SSRF RFC 8555...