CVE-2026-41081
- Source
- https://cve.org/CVERecord?id=CVE-2026-41081
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41081.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-41081
- Aliases
- Published
- 2026-04-27T13:10:45.886Z
- Modified
- 2026-07-15T01:49:14.144525469Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Summary
- Apache Storm Client: Anonymous principal assigned on TLS client certificate verification failure
- Details
-
Improper Handling of TLS Client Authentication Failure Leading to Anonymous Principal Assignment in Apache Storm
Versions Affected: up to 2.8.7
Description: When TLS transport is enabled in Apache Storm without requiring client certificate authentication (the default configuration), the TlsTransportPlugin assigns a fallback principal (CN=ANONYMOUS) if no client certificate is presented or if certificate verification fails. The underlying SSLPeerUnverifiedException is caught and suppressed rather than rejecting the connection.
This fail-open behavior means an unauthenticated client can establish a TLS connection and receive a valid principal identity. If the configured authorizer (e.g., SimpleACLAuthorizer) does not explicitly deny access to CN=ANONYMOUS, this may result in unauthorized access to Storm services. The condition is logged at debug level only, reducing visibility in production.
Impact: Unauthenticated clients may be assigned a principal identity, potentially bypassing authorization in permissive or misconfigured environments.
Mitigation: Users should upgrade to 2.8.7 in which TLS authentication failures are handled in a fail-closed manner.
Users who cannot upgrade immediately should: - Enable mandatory client certificate authentication (nimbus.thrift.tls.client.auth.required: true) - Ensure authorization rules explicitly deny access to CN=ANONYMOUS - Review all ACL configurations for implicit default-allow behavior
- Database specific
{ "cwe_ids": [ "CWE-287" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41081.json", "unresolved_ranges": [ { "extracted_events": [ { "fixed": "2.8.7" } ], "source": "AFFECTED_FIELD" } ], "cna_assigner": "apache" }- References