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openSUSE-SU-2026:20644-1

Опубликовано: 29 апр. 2026
Источник: suse-cvrf

Описание

Security update for python-jwcrypto

This update for python-jwcrypto fixes the following issues:

  • CVE-2026-39373: weak mitigation for JWT bomb attack in the deserialize function can lead to memory exhaustion via crafted compressed JWE tokens (bsc#1261802).

Список пакетов

openSUSE Leap 16.0
python313-jwcrypto-1.5.6-160000.3.1

Ссылки

Описание

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.

Затронутые продукты
openSUSE Leap 16.0:python313-jwcrypto-1.5.6-160000.3.1
Ссылки