Posted by Lee Rhodes on Nov 12 Severity: moderate Affected versions: - Apache DataSketches C++ 2.0.0-incubating through 5.3.0 Description: Out-of-bounds Write vulnerability in Apache DataSketches C++. An application that deserializes a KLL sketch from an untrusted source can have heap memory corrupted by a crafted sketch, because the serialized level boundaries were not validated. This issue affects Apache DataSketches C++: 2.0.0 through 5.3.0.
CVE-2026-123274: Apache DataSketches C++: Out-of-bounds write in KLL sketch deserialization allows memory corruption via a crafted sketch
About this summary. This is a short excerpt from the description that oss-security published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://seclists.org/oss-sec/2026/q4/687
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