Critical Alert 4 Active Exploits Detected Today

CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free Vulnerability →
CVE-2026-59310 Broadcom VMware vCenter Path Traversal Vulnerability →
CVE-2026-55040 Microsoft SharePoint Weak Authentication Vulnerability →
CVE-2026-65400 Apple macOS Improper Authentication Vulnerability →
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August 19, 2026

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CVE-2026-48508NVD

Vulnerability Summary

Lemur manages TLS certificate creation. Prior to 1.9.1, StrictRolePermission and AuthorityCreatorPermission in lemur/auth/permissions.py call flask_principal.Permission.__init__() with zero Need objects when ADMIN_ONLY_AUTHORITY_CREATION and LEMUR_STRICT_ROLE_ENFORCEMENT 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/pending_certificates//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.
Severity Level
HIGH(8.8)
Published Date
Aug 18, 2026
Last Modified
Aug 18, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.24%Probability
Root Weakness (CWE)
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.1 Base Metrics
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh