CVE-2026-59886

Katalog CVE

CVSS 7.5 · High EPSS 0,62%

Kerentanan Uncontrolled Resource Consumption pada pyasn1. Skor CVSS 3.1 7.5 (High) menurut github.com.

Deskripsi (NVD)

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.4, the univ.Real type converted its mantissa, base, and exponent value to a Python float using exact big-integer exponentiation. A BER, CER, or DER encoded REAL value only a few bytes long can carry a very large exponent, causing float conversion through prettyPrint(), str(), comparison, arithmetic, int(), or an explicit float() call to consume excessive CPU and memory and hang applications that decode untrusted ASN.1 data and then print, log, or compare decoded objects. This issue is fixed in version 0.6.4.

Rincian

Terbit di NVD

14 Juli 2026

Terakhir diubah

21 Juli 2026

Status NVD

Analyzed

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-400: Uncontrolled Resource Consumption
CWE-770: Allocation of Resources Without Limits or Throttling

EPSS (30 hari)

0,62% peluang dieksploitasi; lebih tinggi dari 48,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/pyasn1/pyasn1/commit/e60c691cb91addb8fcefa2f537e85ede6fb1e886 patch
• https://github.com/pyasn1/pyasn1/security/advisories/GHSA-hm4w-wwcw-mr6r advisory pihak ketiga
• https://github.com/pyasn1/pyasn1/releases/tag/v0.6.4 release notes