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Apache CVE-2026-35337

| EUVD-2026-21902 HIGH
Deserialization of Untrusted Data (CWE-502)
2026-04-13 apache GHSA-jf89-3q6q-vcgr
RCE Apache Deserialization
8.8
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

6
Patch released
Apr 15, 2026 - 02:30 nvd
Patch available
Analysis Generated
Apr 13, 2026 - 15:23 vuln.today
CVSS changed
Apr 13, 2026 - 15:22 NVD
8.8 (None) 8.8 (HIGH)
EUVD ID Assigned
Apr 13, 2026 - 10:15 euvd
EUVD-2026-21902
Analysis Generated
Apr 13, 2026 - 10:15 vuln.today
CVE Published
Apr 13, 2026 - 09:11 nvd
HIGH 8.8

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 31 maven packages depend on org.apache.storm:storm-client (24 direct, 7 indirect)

Ecosystem-wide dependent count for version 2.8.6.

DescriptionNVD

Deserialization of Untrusted Data vulnerability in Apache Storm.

Versions Affected: before 2.8.6.

Description: When processing topology credentials submitted via the Nimbus Thrift API, Storm deserializes the base64-encoded TGT blob using ObjectInputStream.readObject() without any class filtering or validation. An authenticated user with topology submission rights could supply a crafted serialized object in the "TGT" credential field, leading to remote code execution in both the Nimbus and Worker JVMs.

Mitigation: 2.x users should upgrade to 2.8.6.

Users who cannot upgrade immediately should monkey-patch an ObjectInputFilter allow-list to ClientAuthUtils.deserializeKerberosTicket() restricting deserialized classes to javax.security.auth.kerberos.KerberosTicket and its known dependencies. A guide on how to do this is available in the release notes of 2.8.6.

Credit: This issue was discovered by K.

AnalysisAI

Remote code execution in Apache Storm before 2.8.6 allows authenticated users with topology submission rights to execute arbitrary code on Nimbus and Worker JVMs via crafted serialized objects in Kerberos TGT credentials. The vulnerability exploits unsafe deserialization in the Nimbus Thrift API (CWE-502) with CVSS 8.8. …

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RemediationAI

Within 24 hours: Inventory all Apache Storm deployments and document current versions; confirm whether topology submission is restricted to trusted users only. Within 7 days: Contact Apache Storm project for patched version availability and test 2.8.6 or later in non-production environments; simultaneously implement network-level restrictions limiting Nimbus Thrift API access (port 6627 default) to authorized administrative systems only. …

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CVE-2026-35337 vulnerability details – vuln.today
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