CVE-2026-103501

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...

CVE-2026-103501 Apache DataSketches: datasketches-cpp: HLL CouponList Deserialization Buffer Overflow allows memory corruption via a crafted sketch

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...

CVE-2026-103501

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...

CVE-2026-103501 Apache DataSketches: datasketches-cpp: HLL CouponList Deserialization Buffer Overflow allows memory corruption via a crafted sketch

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...

CVE-2026-103501

Apache DataSketches C++ (repo: datasketches-cpp ) is vulnerable to a heap buffer overflow in the HLL sketch deserialization process. When operating in LIST mode from a byte buffer or stream, the software fails to validate the coupon count against the fixed buffer capacity of 8 entries. A crafted ...

EUVD-2026-96306

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...

CVE-2026-103501 Apache DataSketches: datasketches-cpp: HLL CouponList Deserialization Buffer Overflow allows memory corruption via a crafted sketch

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...

CVE-2026-103501: Heap-based Buffer Overflow

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...

PT-2026-109640

Name of the Vulnerable Software and Affected Versions Apache DataSketches C++ versions 1.0.0-incubating through 5.2.9 Description A heap buffer overflow occurs during the HLL sketch deserialization process when operating in LIST mode from a byte buffer or stream. The issue arises because the coup...