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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 8.8 variants that fix this vulnerability. Users should apply these official updates as detailed in Red Hat advisory RHSA-2026:52978 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation actions are indicated beyond applying the vendor-provided patch.

Description

A security vulnerability (CVE-2026-42198) affecting the PostgreSQL JDBC driver allows a client-side denial of service via malicious SCRAM-SHA-256 authentication. This issue impacts Java applications using the postgresql-jdbc package to connect to PostgreSQL databases. Red Hat has issued an important security update for this vulnerability in their Enterprise Linux 8.8 distributions.

References

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