CVSS 4.0
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: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Improper Handling of Highly Compressed Data (Data Amplification) vulnerability in the HTTP/2 implementation of mtrudel bandit allows an unauthenticated remote attacker to exhaust server memory via a small HPACK-compressed HEADERS block. The block stores one large cookie value in the HPACK dynamic table and then references it tens of thousands of times with 1-byte indexed fields. In the reporter's run, a 49 KB block made a server with default settings allocate a 183 MB cookie binary before any application code ran, and every concurrent stream can repeat the cost. Bandit.HTTP2.Connection caps only the compressed block (max_header_block_size), and its check of the decoded list against max_header_list_size never fires because that setting defaults to :infinity. combine_cookie_crumbs/1 in lib/bandit/http2/stream.ex then joins every crumb into one binary. This issue affects bandit: from 0.3.3 before 1.14.0.
Засегнати продукти
- mtrudel bandit: 0.3.3 преди 1.14.0
- mtrudel bandit: 44bf969cd59851622fb6ee4d16227fbc39a77fb4 преди 220b9dfd27f9a21305be2afc75cbe585ddc24e7a
Вид слабост
История
- 26 октомври 2026 Публикувано
Други уязвимости в mtrudel bandit
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-109584
- https://nvd.nist.gov/vuln/detail/CVE-2026-109584
- https://github.com/mtrudel/bandit/security/advisories/GHSA-7gfj-7gvq-3xqj
- https://cna.erlef.org/cves/CVE-2026-109584.html
- https://osv.dev/vulnerability/EEF-CVE-2026-109584
- https://github.com/mtrudel/bandit/commit/44bf969cd59851622fb6ee4d16227fbc39a77fb4
- https://github.com/mtrudel/bandit/commit/220b9dfd27f9a21305be2afc75cbe585ddc24e7a