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.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache DataSketches C++ | unaffected |
|
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No vendor fix or workaround currently provided.
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Fri, 13 Nov 2026 10:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Apache DataSketches C++: Out-of-bounds write in KLL sketch deserialization allows memory corruption via a crafted sketch | |
| Weaknesses | CWE-787 | |
| References |
|
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MITRE
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-11-13T10:34:29.123Z
Reserved: 2026-11-05T18:25:08.447Z
Link: CVE-2026-123274
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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