CVE-2026-13455
Description
A flaw was found in PostgreSQL Anonymizer. Unprivileged masked users can repeatedly call the anon.hash() function to collect seed and hash output pairs. This allows an attacker to perform an offline brute-force attack to deduce the salt, potentially leading to information disclosure.
Statement
PostgreSQL Anonymizer is not shipped in any Red Hat product. It is available in Fedora and EPEL as a community package.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism; Gain Privileges or Assume Identity
If an attacker can gain access to the hashes, then the lack of sufficient computational effort will make it easier to conduct brute force attacks using techniques such as rainbow tables, or specialized hardware such as GPUs, which can be much faster than general-purpose CPUs for computing hashes.
Frequently Asked Questions
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