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8.8
HIGH CVSS 3.1
CVE-2026-35337
Apache Storm Client: RCE through Unsafe Deserialization via Kerberos TGT Credential Handling
Overview
Description

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.

Details
INFO

Published Date :

April 13, 2026, 10:16 a.m.

Last Modified :

April 15, 2026, 3:54 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-35337 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apache storm
: Total Affected Vendor : 1 | Products : 1
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Upgrade Apache Storm to version 2.8.6 or later to fix deserialization RCE.
  • Upgrade Apache Storm to version 2.8.6 or newer.
  • Apply ObjectInputFilter allow-list to ClientAuthUtils.deserializeKerberosTicket if upgrade is delayed.
References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-35337.

URL Resource
https://storm.apache.org/2026/04/12/storm286-released.html Release Notes Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/04/12/6 Mailing List Third Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-35337 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-35337 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-35337 vulnerability anywhere in the article.

  • Daily CyberSecurity
MOVEit WAF Critical Alert: Multi-Level RCE and WAF Bypass Vulnerabilities Disclosed

Progress Software has released a critical security bulletin for April 2026, revealing five high-impact vulnerabilities affecting MOVEit WAF and related Application Delivery Controller (ADC) products. ... Read more

Published Date: Apr 21, 2026 (2 weeks, 1 day ago)
  • Daily CyberSecurity
Critical 9.4 CVSS Flaw Leaves Dolibarr ERP Open to RCE

A security vulnerability has been identified in Dolibarr ERP & CRM, a popular open-source suite used by organizations worldwide to manage business activities ranging from invoices to human resources. ... Read more

Published Date: Apr 20, 2026 (2 weeks, 2 days ago)
  • Daily CyberSecurity
Triple Security Advisory Prompts Immediate Upgrade to Apache OpenMeetings Version 9.0.0

Apache OpenMeetings, the open-source suite providing video conferencing, instant messaging, and collaborative document editing, is facing a series of security disclosures that highlight risks to user ... Read more

Published Date: Apr 13, 2026 (3 weeks, 2 days ago)
  • Daily CyberSecurity
High-Severity RCE and XSS Vulnerabilities Patched in Apache Storm 2.8.6

Apache Storm, the distributed realtime computation system known for processing unbounded streams of data, has released a critical security update. Version 2.8.6 addresses two significant vulnerabiliti ... Read more

Published Date: Apr 13, 2026 (3 weeks, 2 days ago)
  • Daily CyberSecurity
LiteLLM Under Fire: Triple Threat Vulnerabilities Expose AI Gateways to Total Takeover

LiteLLM, the popular open-source library used to provide a unified interface for over 100 Large Language Models (LLMs) like OpenAI and Anthropic, has been hit with a series of critical security disclo ... Read more

Published Date: Apr 13, 2026 (3 weeks, 2 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-35337 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Apr. 15, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:apache:storm:*:*:*:*:*:*:*:* versions from (including) 2.0.0 up to (excluding) 2.8.6
    Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/04/12/6 Types: Mailing List, Third Party Advisory
    Added Reference Type Apache Software Foundation: https://storm.apache.org/2026/04/12/storm286-released.html Types: Release Notes, Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Apr. 13, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • New CVE Received by [email protected]

    Apr. 13, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added CWE CWE-502
    Added Reference https://storm.apache.org/2026/04/12/storm286-released.html
  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Apr. 13, 2026

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2026/04/12/6
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact