CVE-2026-123338 · Package
NO FIX YET · SEE WHAT TO DO
Apache DataSketches C++ does not validate serialized compactor headers when it deserializes a REQ sketch. An application that loads a crafted sketch from an untrusted source can have heap memory corrupted, which can lead to code execution.
first public Nov 13, 2026 · 1 source
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Applications that deserialize REQ sketches from untrusted input are exposed. Applications that only build sketches locally or load them from trusted sources can skip it. The sources do not describe further configuration.
Not affected if no-req-sketch-deserialization, trusted-input-only
Who cares apache-datasketches, c++, data-processing
3.0.0 through 5.3.0).req_sketch) from data that comes from outside your trust boundary.5.3.1.Out-of-bounds Write vulnerability in Apache DataSketches C++. An application that deserializes a REQ sketch from an untrusted source can have heap memory corrupted by a crafted sketch, because the serialized compactor headers were not validated.
This issue affects Apache DataSketches C++: from 3.0.0 through 5.3.0.
Users are recommended to upgrade to version 5.3.1, which fixes the issue.
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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