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Message-ID: <2eed5d1e-7cb7-6b40-ad3b-786ee5c5fef7@apache.org>
Date: Tue, 10 Nov 2026 19:31:54 +0000
From: Lee Rhodes <leerho@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-122096: Apache DataSketches Java: Uncontrolled resource
consumption when deserializing crafted sketch images
Severity: low
Affected versions:
- Apache DataSketches Java through 9.0.0
Description:
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.
References:
https://github.com/apache/datasketches-java/releases/tag/9.1.0
https://github.com/apache/datasketches-java/pull/777
https://github.com/apache/datasketches-java/pull/783
https://datasketches.apache.org
https://www.cve.org/CVERecord?id=CVE-2026-122096
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