Red Hat Security Advisory: postgresql-jdbc security update
Affects Red Hat postgresql-jdbcSource GCVE Database
Not known to be exploited.
Data as of 6 Nov 2026, 02:02 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Exploitation evidence
Disclosed: evidence found.
CVE published 25 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 updated postgresql-jdbc package (version 42.2.3-7.el8_4.1) that fixes this vulnerability. Users of affected Red Hat Enterprise Linux 8.4 variants should apply the security update as detailed in Red Hat advisory RHSA-2026:59278 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are specified or required beyond applying the official patch.
Description
A security vulnerability (CVE-2026-42198) affecting the postgresql-jdbc package allows a client-side denial of service via malicious SCRAM-SHA-256 authentication. This issue impacts Java applications using the PostgreSQL JDBC driver. Red Hat has issued an important security update for affected versions in Red Hat Enterprise Linux 8.4 variants.