Red Hat Security Advisory: postgresql-jdbc security update
Affects Red Hat postgresql-jdbcSource GCVE Database
Not known to be exploited · fixed in Red Hat package updates : patch Red Hat postgresql-jdbc soon.
Data as of 6 Nov 2026, 02:02 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
- Patch
- Available – fixed in 42.2.28
Exploitation evidence
Disclosed: evidence found.
CVE published 10 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
AI-suggested
Red Hat has provided an official security update that fixes this vulnerability. Users of affected Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions should apply the postgresql-jdbc package update to version 42.2.28-1.el9_4.1 or later as detailed in Red Hat advisory RHSA-2026:52929. No additional mitigation steps are required beyond applying this update.
Description
A security vulnerability (CVE-2026-42198) affects the postgresql-jdbc package used by Java programs to access PostgreSQL databases. The flaw allows a client-side denial of service via malicious SCRAM-SHA-256 authentication. Red Hat has issued an important security update for this vulnerability in their Enterprise Linux 9.4 Update Services for SAP Solutions. The update addresses the issue by patching the postgresql-jdbc package to prevent exploitation.