CVE-2026-103501 (GCVE-0-2026-103501)
Vulnerability from cvelistv5
Published
2026-10-10 10:22
Modified
2026-10-16 15:22
Severity ?
CWE
  • CWE-122 - Heap-based buffer overflow
  • CWE-1284 - Improper validation of specified quantity in input
Summary
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.
Impacted products
Vendor Product Version
Apache Software Foundation Apache DataSketches Version: 1.0.0-incubating   ≤ 5.2.0
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Show details on NVD website


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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