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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-94206

Cloak PBKDF2 field ignores the configured iteration count and runs only :size rounds

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Status
Published
Published
Updated
Assigning organization
EEF

Description

Use of Password Hash With Insufficient Computational Effort vulnerability in danielberkompas cloak_ecto and danielberkompas cloak allows an attacker who holds the hashed values and the configured secret to brute-force low-entropy plaintexts much faster than configured. The dump/1 callback that Cloak.Ecto.PBKDF2 (Cloak.Fields.PBKDF2 in cloak before the Ecto code moved to cloak_ecto) injects into a field module calls :pbkdf2.pbkdf2/4 with config[:size] in the iteration-count position. The :iterations setting is validated but never used. With the cloak_ecto defaults (iterations: 600_000, size: 32) each hash runs 32 PBKDF2 rounds instead of 600,000, so offline guessing of values such as email addresses costs about 18,750 times less than configured. This issue affects cloak_ecto: from 1.0.0-alpha.0 onward; cloak: from 0.7.0 before 1.0.0-alpha.0.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

danielberkompas cloak_ecto

Default version status: unaffected

  • 1.0.0-alpha.0 to < *affected
pkg:hex/cloak_ecto

danielberkompas cloak_ecto

Default version status: unaffected

  • a8fa1642b02f1c445a1ee8794c9095eb0921f8f3 to < *affected
pkg:github/danielberkompas/cloak_ecto

danielberkompas cloak

Default version status: unaffected

  • 0.7.0 to < 1.0.0-alpha.0affected
pkg:hex/cloak

danielberkompas cloak

Default version status: unaffected

  • 8699e6417a162c39d9f0ef63511bd23d3f38d1d2 to < 681c9702b7cd9afe0e5a840751ab009f550c69a9affected
pkg:github/danielberkompas/cloak

References