CVE-2026-13455 PostgreSQL Anonymizer: Unrestricted function can leak the secret salt
Unprivileged users can brute-force the secret salt by repeatedly calling the hash function, potentially exposing anonymized data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-13455?
CVE-2026-13455 is a medium-severity vulnerability in DALIBO PostgreSQL Anonymizer, published on 30 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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
Weakness: CWE-328
Which versions are affected by CVE-2026-13455?
It affects 1 product.
Products include Dalibo Postgresql Anonymizer.
How do I fix CVE-2026-13455?
No fix has been published for CVE-2026-13455 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-13455 being exploited?
There is no known exploitation of CVE-2026-13455 in the wild and no public exploit code.
Other vulnerabilities in DALIBO PostgreSQL Anonymizer
Sources
Also known as GHSA-8ch8-93q8-mhm3.