CVE-2026-39373

Katalog CVE

CVSS 5.3 · Medium EPSS 0,43%

Kerentanan Improper Handling of Highly Compressed Data (Data Amplification) pada latchset jwcrypto. Skor CVSS 3.1 5.3 (Medium) menurut github.com.

Deskripsi (NVD)

JWCrypto implements JWK, JWS, and JWE specifications using python-cryptography. Prior to 1.5.7, an unauthenticated attacker can exhaust server memory by sending crafted JWE tokens with ZIP compression. The existing patch for CVE-2024-28102 limits input token size to 250KB but does not validate the decompressed output size. An unauthenticated attacker can cause memory exhaustion on memory-constrained systems. A token under the 250KB input limit can decompress to approximately 100MB. This vulnerability is fixed in 1.5.7.

Rincian

Terbit di NVD

7 April 2026

Terakhir diubah

24 Juli 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)

EPSS (30 hari)

0,43% peluang dieksploitasi; lebih tinggi dari 35,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/latchset/jwcrypto/security/advisories/GHSA-fjrm-76x2-c4q4 exploit · advisory vendor