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4 vulnerabilities by danielberkompas
CVE-2026-95105 (GCVE-0-2026-95105)
Vulnerability from nvd – Published: 2026-10-06 08:37 – Updated: 2026-10-06 11:40
VLAI
EPSS
VEX
Title
Cloak AES-CTR cipher lacks ciphertext authentication, allowing chosen-plaintext forgery by bit flipping
Summary
Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking vulnerability in danielberkompas cloak allows an attacker with write access to stored ciphertext to make it decrypt to a chosen value via bit flipping.
Cloak.Ciphers.AES.CTR encrypts with AES-256 in CTR mode and stores the key tag, the IV and the ciphertext with no MAC. decrypt/2 checks only the key tag and the minimum length before it returns the plaintext, and Cloak.Ciphers.Deprecated.AES.CTR decrypts the legacy format the same way. CTR is a stream cipher, so a value XORed into the stored ciphertext is XORed into the plaintext at the same offset. An attacker who can write to the encrypted store (for example through SQL injection or a compromised replica) and who knows or can guess a stored plaintext can replace it with any value of the same length. The application receives that value with no error.
This issue affects cloak: from 0.1.0-pre onward.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 11:37 UTC
CWE
- CWE-649 - Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://cna.erlef.org/cves/CVE-2026-95105.html | relatedthird-party-advisory |
| https://osv.dev/vulnerability/EEF-CVE-2026-95105 | related |
| https://github.com/danielberkompas/cloak/commit/2… | related |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| danielberkompas | cloak |
Affected:
0.1.0-pre , < *
(semver)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak |
Affected:
2bd17019e285b55c5c218cc842537bf9280f24c3 , < *
(git)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
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CVE-2026-94206 (GCVE-0-2026-94206)
Vulnerability from nvd – Published: 2026-10-06 08:38 – Updated: 2026-10-06 11:36
VLAI
EPSS
VEX
Title
Cloak PBKDF2 field ignores the configured iteration count and runs only :size rounds
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 11:34 UTC
CWE
- CWE-916 - Use of Password Hash With Insufficient Computational Effort
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://cna.erlef.org/cves/CVE-2026-94206.html | relatedthird-party-advisory |
| https://osv.dev/vulnerability/EEF-CVE-2026-94206 | related |
| https://github.com/danielberkompas/cloak_ecto/com… | related |
| https://github.com/danielberkompas/cloak/commit/8… | related |
| https://github.com/danielberkompas/cloak/commit/6… | patch |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| danielberkompas | cloak_ecto |
Affected:
1.0.0-alpha.0 , < *
(semver)
cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak_ecto |
Affected:
a8fa1642b02f1c445a1ee8794c9095eb0921f8f3 , < *
(git)
cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak |
Affected:
0.7.0 , < 1.0.0-alpha.0
(semver)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak |
Affected:
8699e6417a162c39d9f0ef63511bd23d3f38d1d2 , < 681c9702b7cd9afe0e5a840751ab009f550c69a9
(git)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
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CVE-2026-94206 (GCVE-0-2026-94206)
Vulnerability from cvelistv5 – Published: 2026-10-06 08:38 – Updated: 2026-10-06 11:36
VLAI
EPSS
VEX
Title
Cloak PBKDF2 field ignores the configured iteration count and runs only :size rounds
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 11:34 UTC
CWE
- CWE-916 - Use of Password Hash With Insufficient Computational Effort
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://cna.erlef.org/cves/CVE-2026-94206.html | relatedthird-party-advisory |
| https://osv.dev/vulnerability/EEF-CVE-2026-94206 | related |
| https://github.com/danielberkompas/cloak_ecto/com… | related |
| https://github.com/danielberkompas/cloak/commit/8… | related |
| https://github.com/danielberkompas/cloak/commit/6… | patch |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| danielberkompas | cloak_ecto |
Affected:
1.0.0-alpha.0 , < *
(semver)
cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak_ecto |
Affected:
a8fa1642b02f1c445a1ee8794c9095eb0921f8f3 , < *
(git)
cpe:2.3:a:danielberkompas:cloak_ecto:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak |
Affected:
0.7.0 , < 1.0.0-alpha.0
(semver)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak |
Affected:
8699e6417a162c39d9f0ef63511bd23d3f38d1d2 , < 681c9702b7cd9afe0e5a840751ab009f550c69a9
(git)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
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CVE-2026-95105 (GCVE-0-2026-95105)
Vulnerability from cvelistv5 – Published: 2026-10-06 08:37 – Updated: 2026-10-06 11:40
VLAI
EPSS
VEX
Title
Cloak AES-CTR cipher lacks ciphertext authentication, allowing chosen-plaintext forgery by bit flipping
Summary
Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking vulnerability in danielberkompas cloak allows an attacker with write access to stored ciphertext to make it decrypt to a chosen value via bit flipping.
Cloak.Ciphers.AES.CTR encrypts with AES-256 in CTR mode and stores the key tag, the IV and the ciphertext with no MAC. decrypt/2 checks only the key tag and the minimum length before it returns the plaintext, and Cloak.Ciphers.Deprecated.AES.CTR decrypts the legacy format the same way. CTR is a stream cipher, so a value XORed into the stored ciphertext is XORed into the plaintext at the same offset. An attacker who can write to the encrypted store (for example through SQL injection or a compromised replica) and who knows or can guess a stored plaintext can replace it with any value of the same length. The application receives that value with no error.
This issue affects cloak: from 0.1.0-pre onward.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 11:37 UTC
CWE
- CWE-649 - Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://cna.erlef.org/cves/CVE-2026-95105.html | relatedthird-party-advisory |
| https://osv.dev/vulnerability/EEF-CVE-2026-95105 | related |
| https://github.com/danielberkompas/cloak/commit/2… | related |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| danielberkompas | cloak |
Affected:
0.1.0-pre , < *
(semver)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
|
| danielberkompas | cloak |
Affected:
2bd17019e285b55c5c218cc842537bf9280f24c3 , < *
(git)
cpe:2.3:a:danielberkompas:cloak:*:*:*:*:*:*:*:* |
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