CVE-2026-63209

Katalog CVE

CVSS 7.5 · High EPSS 0,37%

Kerentanan Integer Overflow or Wraparound. Skor CVSS 3.1 7.5 (High) menurut github.com.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

29 September 2026

Terakhir diubah

30 September 2026

Status NVD

Deferred

CVSS 3.1

7.5 (High), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-190: Integer Overflow or Wraparound
CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,37% peluang dieksploitasi; lebih tinggi dari 28,4% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://github.com/klauspost/compress/commit/539243b8823ee8f03e49969823d57c348c917536
• https://github.com/klauspost/compress/releases/tag/v1.18.7
• https://github.com/klauspost/compress/security/advisories/GHSA-259r-337f-4rfw