CVE-2026-122096

What it is

Uncontrolled Resource Consumption vulnerability in the sketch deserialization of Apache DataSketches Java. Several deserializers trusted sizes and counts declared in the serialized input. A small crafted input could make an application allocate an excessive amount of memory, leading to an OutOfMemoryError. A crafted string passed to FrequentLongsSketch.getInstance(String) could also make deserialization, or a later update, loop indefinitely. Only applications that deserialize sketches from untrusted sources are affected. This issue affects Apache DataSketches Java: through 9.0.0. Users are recommended to upgrade to version 9.1.0, which fixes the issue.

At a glance

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-11-11 13:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-11-11 13:17 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: not scored yet.
• Severity: not scored yet.
• Fix: a patch or advisory is linked.

Details

Published

2026-11-11 13:17 UTC

Last modified

2026-11-11 13:17 UTC

Weakness

CWE-400 · Uncontrolled resource consumption

Record status

Received

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