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 не може да се автоматизира
Описание
Оригинално описание
Inefficient Algorithmic Complexity vulnerability in team-alembic AshAuthentication allows an unauthenticated attacker to exhaust CPU and memory via an oversized base62 segment in a submitted API key. AshAuthentication.Base.decode62/1 in lib/ash_authentication/base.ex splits its argument into one binary per character and folds it with charval62/2, which recomputes Integer.pow(62, index) at every position instead of accumulating by Horner's method, so cost grows roughly cubically in the input length. bindecode62/1 in the same module is quadratic through Integer.undigits/2 and Integer.digits/2. Neither function caps byte_size/1, and AshAuthentication.Strategy.ApiKey.SignInPreparation passes the underscore-separated segments of the submitted key straight into both, before any key lookup and without prior authentication. The surrounding rescue clauses catch exceptions, not CPU or memory exhaustion. This issue affects ash_authentication: from 4.8.0 before 4.15.0 and from 5.0.0-rc.0 before 5.0.0-rc.14.
Засегнати продукти
- team-alembic ash_authentication: 4.8.0 преди 4.15.0; 5.0.0-rc.0 преди 5.0.0-rc.14
- team-alembic ash_authentication: от f3a53f480088419788d5c3934af3131fa9066773 нататък
Вид слабост
История
- 17 септември 2026 Публикувано
Други уязвимости в team-alembic ash_authentication
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-82760
- https://nvd.nist.gov/vuln/detail/CVE-2026-82760
- https://github.com/team-alembic/ash_authentication/security/advisories/GHSA-q876-xr24-2mcx
- https://cna.erlef.org/cves/CVE-2026-82760.html
- https://osv.dev/vulnerability/EEF-CVE-2026-82760
- https://github.com/team-alembic/ash_authentication/commit/f3a53f480088419788d5c3934af3131fa9066773
- https://github.com/team-alembic/ash_authentication/commit/d5a5d4cb5cc17fbd6e2a120a6111b47accad4b8e
- https://github.com/team-alembic/ash_authentication/commit/dfb19c897853686ab481c5e773f7a1a0c74dea04