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CVE-2026-42198VulnerabilityPublished Updated

Red Hat Security Advisory: postgresql-jdbc security update

Affects Red Hat postgresql-jdbcSource GCVE Database

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Not known to be exploited.

Data as of 6 Nov 2026, 02:02 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 released updated postgresql-jdbc packages (version 42.2.28-1.el9_2.1) for Red Hat Enterprise Linux 9.2 and related variants. Users should apply these official updates as described in Red Hat's advisory and article https://access.redhat.com/articles/11258 to remediate the vulnerability. No additional mitigation steps are indicated by the vendor.

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 issue affecting Red Hat Enterprise Linux 9.2 variants. The update addresses the vulnerability by patching the postgresql-jdbc package to prevent exploitation.

References

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