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JLSEC-2026-480 Medium 5.5

zlib before 1.3.2 allows CPU consumption via `crc32_combine64` and `crc32_combine_gen64` because...

SourceEditHistoryOSVJSON (OSV)
JLSEC Published
Modified
Severity
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
Openresty_jll >= 1.21.4+0, < 1.29.203+0
Zlib_jll >= 1.2.12+3, < 1.3.2+0
fmusim_jll < 0.0.39001+0
Upstream
CVE-2026-27171 GHSA-h858-mf2m-8jf4 EUVD-2026-8063

zlib before 1.3.2 allows CPU consumption via crc32_combine64 and crc32_combine_gen64 because x2nmodp can do right shifts within a loop that has no termination condition.

References