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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, 02:06 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Jun 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 10 and its Extended Update Support and Extended Life Cycle variants. Users should apply these official patches to remediate the vulnerability. Refer to Red Hat article https://access.redhat.com/articles/11258 for update instructions. No additional mitigations are specified or required beyond applying the 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 (DoS) via malicious SCRAM-SHA-256 authentication. Red Hat has issued an important security update for Red Hat Enterprise Linux 10 to address this issue.

References

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