CVE-2026-103501 (GCVE-0-2026-103501)

Vulnerability from cvelistv5 – Published: 2026-10-10 10:22 – Updated: 2026-10-10 12:10
VLAI
Title
Apache DataSketches: datasketches-cpp: HLL CouponList Deserialization Buffer Overflow allows memory corruption via a crafted sketch
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.
Severity
No CVSS data available.
CWE
  • CWE-122 - Heap-based buffer overflow
  • CWE-1284 - Improper validation of specified quantity in input
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 939 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache DataSketches Affected: 1.0.0-incubating , ≤ 5.2.0 (semver)
guessed Create a notification for this product.
Credits
Reported anonymously.
Show details on NVD website
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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