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: има публичен пример за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Inefficient Algorithmic Complexity vulnerability in elixir-mint hpax allows unauthenticated denial-of-service via unbounded HPACK integer decoding. hpax decodes HPACK variable-length integers with no upper bound on the decoded value or the number of continuation octets. 'Elixir.HPAX.Types':decode_remaining_integer/3 accumulates the integer as int + (value <<< m), shifting by 7 more bits for each continuation octet and stopping only on a terminating octet or truncated input, never because the integer grew too large. Because BEAM integers are arbitrary precision, a run of N continuation octets builds an O(N)-bit bignum and re-adds into an ever-larger bignum on each step, so the total decoding cost is superlinear (about O(N^2)). An unauthenticated attacker who can send an HTTP/2 header block to a server using this decoder (reached through the 'Elixir.HPAX':decode/2 entry point) can supply a small header block that forces a large, attacker-controlled amount of CPU (and transient memory), a denial-of-service amplification. This issue affects hpax from 0.1.1 before 1.0.4.
Засегнати продукти
- elixir-mint hpax: 0.1.1 преди 1.0.4
- elixir-mint hpax: 56db437a7e2c515e3bdd770ac7947b02cd2390d0 преди 1ba4bb2dc91e80089cf89c73970ac3ded76f17eb
Вид слабост
История
- 6 юли 2026 Публикувано
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-58226
- https://nvd.nist.gov/vuln/detail/CVE-2026-58226
- https://github.com/elixir-mint/hpax/security/advisories/GHSA-jj2p-32j7-whj2
- https://cna.erlef.org/cves/CVE-2026-58226.html
- https://osv.dev/vulnerability/EEF-CVE-2026-58226
- https://github.com/elixir-mint/hpax/commit/1ba4bb2dc91e80089cf89c73970ac3ded76f17eb