CVE-2026-13455

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

CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0012

Probability of exploitation

0.02%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-328 CWE-328

Affected Products

Vendor	Product	Versions
dalibo	postgresql_anonymizer	< 3.1.2

References

Advisories & Patches

https://gitlab.com/dalibo/postgresql_anonymizer/-/issues/649

Frequently Asked Questions

What is 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 It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-13455? +

CVE-2026-13455 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0012, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-13455? +

CVE-2026-13455 affects products from dalibo, specifically: postgresql_anonymizer. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-13455? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-21604

LangChain4j-AIDeepin is a Retrieval enhancement generation (RAG) project. Prior to 3.5.0, LangChain4j-AIDeepin uses MD5 to hash files, which may cause …

CVE-2026-45413

MaxKB is an open-source AI assistant for enterprise. Prior to 2.9.1, user passwords are stored using unsalted MD5 hashes, making …

CVE-2024-48924

### Impact When this library is used to deserialize messagepack data from an untrusted source, there is a risk of …

CVE-2024-54143

openwrt/asu is an image on demand server for OpenWrt based distributions. The request hashing mechanism truncates SHA-256 hashes to only …

CVE-2024-56516

free-one-api allows users to access large language model reverse engineering libraries through the standard OpenAI API format. In versions up …

CVE-2026-48488

phpMyFAQ is an open source FAQ web application. Prior to version 4.1.4, attachment passwords are hashed using SHA-1, a cryptographically …