CVE-2026-13455
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
A vulnerability in PostgreSQL Anonymizer allows unprivileged masked users to repeatedly call the anon.hash() function and collect (seed, hash_output) pairs to perform an offline brute-force attack and deduce the salt.
Risk Assessment
The organization is at risk of salt leakage used for data masking, which could allow an attacker to reverse original values and compromise sensitive data confidentiality.
Recommendation
Immediately upgrade PostgreSQL Anonymizer to version 3.1.2 or later, which fixes this vulnerability.
Other vulnerabilities in PostgreSQL Anonymizer
See all- CVE-2026-83534Medium
PostgreSQL Anonymizer contains a vulnerability in the anon.anonymize_database_parallel() function that allows a table owner to execute arbitrary code with superuser privileges. The issue is fixed in version 3.2.0 and later.
- CVE-2026-19634Medium
PostgreSQL Anonymizer contains a SQL injection vulnerability in two import functions. A user can create a malicious JSON document with specially crafted object names. If a superuser calls anon.import_database_rules() or anon.import_roles_rules(), malicious code is executed with superuser privileges. Fixed in version 3.1.4 and later.
- CVE-2026-19633High
PostgreSQL Anonymizer contains a vulnerability allowing unprivileged masked users to execute arbitrary code by abusing operators, domain casts, or view subqueries carrying untrusted expressions. When evaluated in the masking context, malicious code can run with elevated privileges. Fixed in version 3.1.4 and later.
- CVE-2026-11945Medium
PostgreSQL Anonymizer contains a vulnerability that allows a user to gain superuser privileges by creating a JSON document and placing malicious code inside a particular key-value pair. If a superuser calls the import_database_rules() or import_roles_rules() functions, the malicious code is executed with superuser privileges.
Original NVD description (English source)
PostgreSQL Anonymizer contains a vulnerability that allows unprivileged masked users to repeatedly call the anon.hash() function and collects (seed, hash_output) pairs to perform an offline brute-force attack and deduce the salt. The problem is resolved in PostgreSQL Anonymizer 3.1.2 and later versions