CVE-2026-76875

Katalog CVE

CVSS 5.3 · Medium EPSS 0,24%

Kerentanan Use After Free. Skor CVSS 3.1 5.3 (Medium) menurut vulncheck.com.

Deskripsi (NVD)

PyPy before versions 3.11.16 and 3.12.14 contains a use-after-free vulnerability in the pyexpat module's ExternalEntityParserCreate function that allows attackers to corrupt memory by supplying a crafted XML document to applications that create external-entity sub-parsers without retaining a reference to the parent parser. The child parser retains a raw C back-pointer to the parent parser struct while PyPy's tracing garbage collector can free the parent's C struct, causing bundled libexpat to dereference the freed pointer on every parsed token, producing memory corruption.

Rincian

Terbit di NVD

29 September 2026

Terakhir diubah

2 Oktober 2026

Status NVD

Awaiting Analysis

CVSS 3.1

5.3 (Medium), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-416: Use After Free

EPSS (30 hari)

0,24% peluang dieksploitasi; lebih tinggi dari 14,0% 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://doc.pypy.org/release-v8.0.0.html
• https://github.com/pypy/pypy/releases/tag/release-pypy3.11-v8.0.0
• https://github.com/pypy/pypy/releases/tag/release-pypy3.12-v8.0.0
• https://www.vulncheck.com/advisories/pypy-pyexpat-externalentityparsercreate-use-after-free