Memory Allocation with Excessive Size Value 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
- creditThe ASF
Introduced: 14 Sep 2026
NewCVE-2026-82435 (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 Memory Allocation with Excessive Size Value due to the Netty message decoder processing frames before authentication occurs. An attacker can exhaust system memory by sending a specially crafted frame with a large length field to a worker port, causing excessive buffer allocation.
** Note:** This is only exploitable if the attacker has TCP reachability to the worker slot port and authentication is not enforced.
Workaround
This vulnerability can be mitigated by restricting network access to worker slot ports to only trusted sources within the cluster and enabling storm.messaging.netty.authentication if supported by the deployment.