CVE-2026-103501

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Source

https://cve.org/CVERecord?id=CVE-2026-103501

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103501.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-103501

Published

2026-10-10T10:22:55Z

Modified

2026-10-15T02:30:43Z

Summary

Apache DataSketches: datasketches-cpp: HLL CouponList Deserialization Buffer Overflow allows memory corruption via a crafted sketch

Details

Heap buffer overflow in the HLL sketch deserialization of Apache DataSketches C++ (repo: datasketches-cpp).

When deserializing a sketch in LIST mode, from either a byte buffer or a stream, the coupon count was read from the input and used as the number of entries to copy into a fixed buffer of 8 entries, without checking it against the buffer's capacity. A crafted sketch could cause a write of up to 988 bytes past the end of this internal heap buffer. This can corrupt heap memory, causing a crash and potentially enabling further exploitation.

This issue affects Apache DataSketches C++: from 1.0.0-incubating before 5.3.0. Only applications that deserialize HLL sketches from untrusted sources are affected.

Users are recommended to upgrade to version 5.3.0, which fixes this issue.

Database specific

{
    "cna_assigner":  "apache",
    "cwe_ids":  [
        "CWE-122",
        "CWE-1284"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103501.json"
}

References

Affected packages

Git / github.com/apache/datasketches-cpp

Affected ranges

Type

GIT

Repo

https://github.com/apache/datasketches-cpp

Events

Introduced

fa481e2c0b8dd2e3d6a389338168b930e3e6698d

Fixed

5b5524f55d121225a7909c2851271327684585d7

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "1.0.0-incubating"
        },
        {
            "last_affected":  "5.2.0"
        },
        {
            "fixed":  "5.3.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103501.json"