CVE Watch29 sept 2026

CVE-2026-63209

compress provides various compression algorithms. Prior to version 1.18.7, a signed integer overflow vulnerability in s2.NewDict() allows an

CVSS

7.5

Alto

EPSS

0.4%

p29

KEV

—

Exploit Today

0-100

Publicado: 29 sept 2026 · Última mod.: 29 sept 2026 · CWE-190 · CWE-787

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-09-302026-10-19

Descripción técnica

compress provides various compression algorithms. Prior to version 1.18.7, a signed integer overflow vulnerability in s2.NewDict() allows an attacker to bypass repeat index validation by supplying a dictionary with a uvarint-encoded repeat value exceeding MaxInt64. When Dict.Encode() is subsequently called, the overflowed negative repeat value causes an out-of-bounds memory access via unsafe.Pointer arithmetic, crashing the process with SIGSEGV. This issue has been patched in version 1.18.7.

Referencias oficiales

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