What is CVE-2026-13455?

CVE-2026-13455 is a medium-severity vulnerability in Dalibo Postgresql Anonymizer, classified under Use of Weak Hash. CVSS score: 4.3/10. Published 2026-06-30.

How severe is CVE-2026-13455?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Dalibo Postgresql Anonymizer

CVE-2026-13455

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

EPSS: 0.001 (2.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Dalibo Postgresql Anonymizer — versions 1
Dalibo Postgresql_anonymizer

Weakness classification (CWE)

CWE-328 — Use of Weak Hash

References

f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-13455?: CVE-2026-13455 is a medium-severity vulnerability in Dalibo Postgresql Anonymizer, classified under Use of Weak Hash. CVSS score: 4.3/10. Published 2026-06-30.
How severe is CVE-2026-13455?: Medium severity. CVSS v3 base score is 4.3 out of 10.