CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Multidict is an implementation of a multidict data structure. From 6.7.0 until 6.9.1, the C extension's items-view reflected union operation, operand | d.items(), in multidict_itemsview_or2_impl and subtraction operation, d.items() - operand, in multidict_itemsview_sub1_impl fail to release new key-identity and value references returned for each operand element. Applications that perform these operations over attacker-influenced sequences can leak two strong references per element, and garbage collection cannot reclaim them, so repeated operations can cause unbounded process memory growth and denial of service. Forward union, intersection, non-tuple operand elements, and pure-Python builds are not affected by this reference leak. This issue is fixed in version 6.9.1.
Засегнати продукти
- aio-libs multidict: >= 6.7.0, < 6.9.1
Вид слабост
История
- 2 октомври 2026 Публикувано
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-104874
- https://nvd.nist.gov/vuln/detail/CVE-2026-104874
- https://github.com/aio-libs/multidict/security/advisories/GHSA-54p9-h82j-f925
- https://github.com/aio-libs/multidict/commit/350b4a07bf8ff851b6d7544e81b1c748bdc74c40
- https://github.com/aio-libs/multidict/releases/tag/v6.9.1