Bug 2495162 - CVE-2026-13455 postgresql16-anonymizer: PostgreSQL Anonymizer: Information Disclosure via brute-force attack on hash function [fedora-all]
Summary: CVE-2026-13455 postgresql16-anonymizer: PostgreSQL Anonymizer: Information Di...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: postgresql16-anonymizer
Version: 45
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Petr Khartskhaev
QA Contact:
URL:
Whiteboard: {"flaws": ["2798524c-783d-49c3-abc1-b...
Depends On:
Blocks: CVE-2026-13455
TreeView+ depends on / blocked
 
Reported: 2026-06-30 20:10 UTC by Jon Weiser
Modified: 2026-08-28 16:06 UTC (History)
2 users (show)

Fixed In Version: postgresql16-anonymizer-3.1.3-1.fc44
Clone Of:
Environment:
Last Closed: 2026-08-28 16:06:36 UTC
Type: ---
Embargoed:

Attachments (Terms of Use)

Description Jon Weiser 2026-06-30 20:10:55 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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
Comment 1 Aoife Moloney 2026-08-17 15:08:20 UTC 
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle.
Changing version to 45.
Comment 2 Fedora Update System 2026-08-19 13:43:06 UTC 
FEDORA-2026-1b05b6dad1 (postgresql16-anonymizer-3.1.3-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-1b05b6dad1
Comment 3 Fedora Update System 2026-08-20 16:39:48 UTC 
FEDORA-2026-1b05b6dad1 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-1b05b6dad1`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-1b05b6dad1

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 4 Fedora Update System 2026-08-28 16:06:36 UTC 
FEDORA-2026-1b05b6dad1 (postgresql16-anonymizer-3.1.3-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.
Note You need to log in before you can comment on or make changes to this bug.