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TI-2026-68041 Aliases CVE-2026-94206GHSA-fjfg-jh7h-6w3j

Cloak PBKDF2 field ignores configured iteration count

Priority MEDIUM 61CWE-916Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

The cloak_ecto package from 1.0.0-alpha.0 onward and the cloak package from 0.7.0 before 1.0.0-alpha.0 contain a PBKDF2 field that ignores the configured iteration count and runs only the size value as rounds. This uses a password hash with insufficient computational effort (CWE-916), so an attacker who holds the hashed values and the configured secret can brute-force low-entropy plaintexts much faster than configured. With the cloak_ecto defaults, each hash runs 32 rounds instead of 600,000.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00245 15th percentileScored 2026-11-07
Fix Fixed cloak (danielberkompas): 1.0.0-alpha.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
danielberkompascloak_ecto1.0.0-alpha.0 and later—No fix listedCNA
danielberkompascloak0.7.0 to before 1.0.0-alpha.01.0.0-alpha.0Patch availableCNA
  • cloak_ecto Vendordanielberkompas Affected 1.0.0-alpha.0 and later Fixed in — No fix listed CNA
  • cloak Vendordanielberkompas Affected 0.7.0 to before 1.0.0-alpha.0 Fixed in 1.0.0-alpha.0 Patch available CNA

CPE names CNA · 2

CPEVersionsRoleVendor
cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:*——danielberkompas
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:*——danielberkompas
  • cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:* Versions — — ·danielberkompas
  • cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* Versions — — ·danielberkompas

Remediation

For the cloak package, upgrade to 1.0.0-alpha.0, which fixes the flaw. The sources list no fixed version for cloak_ecto.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA cloak (danielberkompas) Fixed in 1.0.0-alpha.0

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-94206
  2. 2026-10-06 Alias added: GHSA-fjfg-jh7h-6w3j
  3. 2026-10-06 CISA SSVC decision points changed

References

Patch 1

Advisory 1

Other 3

  • TI-2026-68048 Cloak AES-CTR cipher lets attackers forge stored encrypted values CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences