CVE-2026-123274

Unknown

Last modified

CVE-2026-123274 is a vulnerability of currently unknown severity. 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. Users are recommended to upgrade to version 5.3.1, which fixes the issue..

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. Users are recommended to upgrade to version 5.3.1, which fixes the issue.

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Apache Software FoundationApache DataSketches C++>= 1.0.0-incubating, <= 5.3.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-123274?
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. Users are recommended to upgrade to version 5.3.1, which fixes the issue.
How severe is CVE-2026-123274?
Severity scoring for CVE-2026-123274 is pending analysis.
How do I fix CVE-2026-123274?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST