CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, само при определена конфигурация или състояние на системата, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Http4s is a Scala interface for HTTP services. Prior to 0.23.35 and 1.0.0-M47, an unauthenticated HTTP/2 peer can cause an out-of-memory denial of service in the Ember backend with HTTP/2 enabled. The Hpack wrapper in ember-core/shared/src/main/scala/org/http4s/ember/core/h2/Hpack.scala concatenates HEADERS and CONTINUATION frame fragments and decodes them into a single List, but maxHeaderSize accounting does not include indexed headers or HPACK per-header overhead. A small compressed header block can therefore expand into a much larger decoded representation that remains in memory for processing. Servers exposed to untrusted HTTP/2 traffic and clients directed to an untrusted HTTP/2 server are affected, and concurrent malicious connections can exhaust the process heap. This issue is fixed in versions 0.23.35 and 1.0.0-M47.
Засегнати продукти
- http4s http4s: < 0.23.35; >= 1.0.0-M1, < 1.0.0-M46
- org.http4s http4s-ember-core_2.12: < 0.23.35
- org.http4s http4s-ember-core_2.13: >= 1.0.0-M1, < 1.0.0-M46; < 0.23.35
- org.http4s http4s-ember-core_3: >= 1.0.0-M1, < 1.0.0-M46; < 0.23.35
Вид слабост
История
- 26 август 2026 Публикувано
Други уязвимости в http4s http4s
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-54556
- https://nvd.nist.gov/vuln/detail/CVE-2026-54556
- https://github.com/http4s/http4s/security/advisories/GHSA-vmm3-xgcx-67hm
- https://github.com/http4s/http4s/commit/6e8eccd64a6a74ab4811897881e95e0e1b3a818e
- https://github.com/http4s/http4s/releases/tag/v0.23.35
- https://github.com/http4s/http4s/releases/tag/v1.0.0-M47