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High 7.4
zlib 1.3.1.2 through 1.3.2 Heap Buffer Overflow via gz_vacate
zlib versions 1.3.1.2 through 1.3.2 contain a heap buffer overflow vulnerability in the gz_vacate() function when processing non-blocking gzwrite() operations with stale external buffer pointers. Attackers can trigger the overflow by calling gzprintf() or gzv…
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High 7.4CVE-2026-76844 Public exploit
zlib 1.2.11 through 1.3.2 Heap Buffer Overflow via Stale gzwrite Pointer After Failed Write
zlib 1.2.11 through 1.3.2 contains a heap buffer overflow: after an underlying write() fails, gz_write() returns without resetting strm.next_in, leaving it pointed at the caller's buffer. A later gz* write call then derives a position from the stale pointer a…
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Critical 9.8
Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib
Compress::Raw::Zlib versions through 2.219 for Perl use potentially insecure versions of zlib. Compress::Raw::Zlib includes a copy of the zlib library. Compress::Raw::Zlib version 2.220 includes zlib 1.3.2, which addresses findings fron the 7ASecurity audit o…
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Low 2.9
zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shift…
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High 8.8
pyminizip affected by zlib's integer overflow/heap based buffer overflow vulnerability due to vulnerable dependency
MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is a…
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Critical 9.8
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip heade…
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High 7.5
Nokogiri affected by zlib's Out-of-bounds Write vulnerability
zlib before 1.2.12 allows memory corruption when deflating (i.e., when compressing) if the input has many distant matches.