danielberkompas cloak Decrypt decrypt integrity check

Summaryinfo

A vulnerability marked as critical has been reported in danielberkompas cloak. This affects the function decrypt of the component Decrypt. This manipulation causes integrity check. This vulnerability appears as CVE-2026-95105. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in danielberkompas cloak (the affected version is unknown) and classified as critical. Affected by this vulnerability is the function decrypt of the component Decrypt. The manipulation with an unknown input leads to a integrity check vulnerability. The CWE definition for the vulnerability is CWE-354. The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at cna.erlef.org. This vulnerability is known as CVE-2026-95105 since 09/25/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/06/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• danielberkompas

Name

• cloak

CPE 2.3info

• 🔒

CPE 2.2info

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