Incorrect Authorization Affecting org.apache.storm:storm-client package, versions [3.0.0, 3.1.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Sept 2026
- disclosed14 Sept 2026
- creditUnknown
Introduced: 14 Sep 2026
NewCVE-2026-82431 (opens in a new tab)How to fix?
Upgrade org.apache.storm:storm-client to version 3.1.0 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization due to improper evaluation of the SimpleACLAuthorizer process when nimbus.groups is configured without nimbus.users. An attacker can gain unauthorized access to user-level operations by authenticating as any principal when only group-based restrictions are set.
Note: This is only exploitable if nimbus.groups is configured and nimbus.users is left unset.
Workaround
This vulnerability can be mitigated by populating nimbus.users with the intended principals, as a non-empty user list causes the group list to be evaluated.