Memory Leak in DRPC Server of Apache Storm
CVE-2026-82439

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Storm Drpc
Vendor
CVE Published:
14 September 2026

What is CVE-2026-82439?

The DRPC server in Apache Storm retains function names sent by clients, creating persistent entries that are never removed. This accumulation can lead to heap exhaustion, as the number of retained entries grows with each unique function name an attacker sends. Without proper mitigation such as upgrading to version 3.1.0 or configuring the 'drpc.authorizer' to restrict access to trusted principals, the server risks becoming non-operational due to memory depletion.

Affected Version(s)

Apache Storm DRPC 3.0.0 < 3.1.0

References

https://lists.apache.org/thread/7sgzvv5lzz93jn6vy74qfk105...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

The ASF using Claude Agents
.