GHSA-x2g5-fvc2-gqvp: 
Flowise vulnerability analysis and mitigation

Description

The default bcrypt salt rounds is set to 5, which is below the recommended minimum for security.

Affected Code

export function getHash(value: string) {
    const salt = bcrypt.genSaltSync(parseInt(process.env.PASSWORD_SALT_HASH_ROUNDS || '5'))
    return bcrypt.hashSync(value, salt)
}

Evidence

Using 5 salt rounds provides 2^5 = 32 iterations, which is far below the OWASP recommendation of 10 (2^10 = 1024 iterations) for bcrypt. This makes password hashes vulnerable to brute-force attacks with modern hardware.

Impact

Faster password cracking - in the event of database compromise, attackers can crack password hashes significantly faster than with proper salt rounds, potentially compromising all user accounts.

Recommendation

Increase default PASSWORD_SALT_HASH_ROUNDS to at least 10 (recommended by OWASP). Consider using 12 for better security-performance balance. Document that higher values increase login time but improve security.

Notes

The default bcrypt salt rounds is 5 (line 6), which provides only 2^5=32 iterations. OWASP recommends minimum 10 rounds (1024 iterations) for bcrypt. While configurable via PASSWORD_SALT_HASH_ROUNDS env var, the default matters because: (1) most deployments use defaults, (2) existing password hashes at 5 rounds remain vulnerable even if later increased. With modern GPUs, 5 rounds allows ~300,000 hashes/second vs ~10,000/second at 10 rounds - a 30x difference in cracking speed. In a database breach scenario, all user passwords could be cracked significantly faster. The same weak default is used in resetPassword (account.service.ts:568). This is a cryptographic weakness with real-world impact on password security. Detection Method: Kolega.dev Deep Code Scan