CVE-2026-94206

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.

CVSS

No CVSS.

References

Link	Resource
https://cna.erlef.org/cves/CVE-2026-94206.html
https://github.com/danielberkompas/cloak/commit/681c9702b7cd9afe0e5a840751ab009f550c69a9
https://github.com/danielberkompas/cloak/commit/8699e6417a162c39d9f0ef63511bd23d3f38d1d2
https://github.com/danielberkompas/cloak_ecto/commit/a8fa1642b02f1c445a1ee8794c9095eb0921f8f3
https://osv.dev/vulnerability/EEF-CVE-2026-94206

Configurations

No configuration.

History

06 Oct 2026, 09:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 09:17

Updated : 2026-10-06 15:03

NVD link : CVE-2026-94206

Mitre link : CVE-2026-94206

CVE.ORG link : CVE-2026-94206

JSON object : View

Products Affected

No product.

CWE

CWE-916

Use of Password Hash With Insufficient Computational Effort

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["cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:*"], "repo": "https://github.com/danielberkompas/cloak_ecto", "vendor": "danielberkompas", "modules": ["'Elixir.Cloak.Ecto.PBKDF2'"], "product": "cloak_ecto", "versions": [{"status": "affected", "version": "1.0.0-alpha.0", "lessThan": "*", "versionType": "semver"}], "packageURL": "pkg:hex/cloak_ecto", "packageName": "cloak_ecto", "programFiles": ["lib/cloak_ecto/types/pbkdf2.ex"], "collectionURL": "https://repo.hex.pm", "defaultStatus": "unaffected"}, {"cpes": ["cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:*"], "repo": "https://github.com/danielberkompas/cloak_ecto", "vendor": "danielberkompas", "modules": ["'Elixir.Cloak.Ecto.PBKDF2'"], "product": "cloak_ecto", "versions": [{"status": "affected", "version": "a8fa1642b02f1c445a1ee8794c9095eb0921f8f3", "lessThan": "*", "versionType": "git"}], "packageURL": "pkg:github/danielberkompas/cloak_ecto", "packageName": "danielberkompas/cloak_ecto", "programFiles": 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"pkg:github/danielberkompas/cloak", "packageName": "danielberkompas/cloak", "programFiles": ["lib/cloak/fields/pbkdf2.ex"], "collectionURL": "https://github.com", "defaultStatus": "unaffected"}]}], "published": "2026-10-06T09:17:56.813", "references": [{"url": "https://cna.erlef.org/cves/CVE-2026-94206.html", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/danielberkompas/cloak/commit/681c9702b7cd9afe0e5a840751ab009f550c69a9", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/danielberkompas/cloak/commit/8699e6417a162c39d9f0ef63511bd23d3f38d1d2", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://github.com/danielberkompas/cloak_ecto/commit/a8fa1642b02f1c445a1ee8794c9095eb0921f8f3", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}, {"url": "https://osv.dev/vulnerability/EEF-CVE-2026-94206", "source": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", 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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.\n\nThis issue affects cloak_ecto: from 1.0.0-alpha.0 onward; cloak: from 0.7.0 before 1.0.0-alpha.0."}], "lastModified": "2026-10-06T15:03:59.427", "sourceIdentifier": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db"}