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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 10 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 for Red Hat Enterprise Linux 9.6 Extended Update Support and related variants that fix this vulnerability. Users should apply these official updates as detailed in the Red Hat advisory (https://access.redhat.com/articles/11258) to remediate the issue. No additional mitigation steps are indicated beyond applying the provided patches.

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 attempts. Red Hat has issued an important security update for this vulnerability in Red Hat Enterprise Linux 9.6 Extended Update Support and related variants. The update addresses the issue by patching the affected postgresql-jdbc package.

References

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