PostgreSQL Anonymizer Vulnerability Allows Brute-Force Exploitation
CVE-2026-13455
4.3MEDIUM
What is CVE-2026-13455?
The PostgreSQL Anonymizer is susceptible to a vulnerability that allows unprivileged masked users to exploit the anon.hash() function. This can lead to potential offline brute-force attacks where attackers may collect (seed, hash_output) pairs, thus enabling them to deduce the salt used in hashing. This poses serious risks to data confidentiality. The issue is remediated in PostgreSQL Anonymizer version 3.1.2 and later.
Affected Version(s)
PostgreSQL Anonymizer 1 < 3.1.2
References
CVSS V3.1
Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged
Timeline
Vulnerability published
Vulnerability Reserved
Credit
The PostgreSQL Anonymizer project thanks user Sarath Kumar for reporting this problem.