pgjdbc is an open source postgresql JDBC Driver. From version 42.2.0 to before version 42.7.11, pgjdbc is vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. A malicious server can instruct the driver to perform SCRAM authentication with a very large iteration count. With a large enough value, the client spends an unbounded amount of CPU time inside PBKDF2 before authentication can fail. A single attempt ties up a CPU core. Repeated or concurrent attempts exhaust client CPU and can wedge connection pools. In affected versions, loginTimeout did not fully mitigate this problem. When loginTimeout expired, the caller could stop waiting, but the worker thread performing the connection attempt could continue running and burning CPU inside the SCRAM PBKDF2 computation. This issue has been patched in version 42.7.11.

The remote Oracle Linux 9 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-22304 advisory.

    - Add tests for CVE-2026-42198
    - Fix CVE-2026-42198: limit SCRAM PBKDF2 iterations to prevent DoS

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by a vulnerability as referenced in the ALINUX3-SA-2026:0155 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2026-42198:
    pgjdbc is an open source postgresql JDBC Driver. From version 42.2.0 to before version 42.7.11, pgjdbc is     vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. A malicious server can     instruct the driver to perform SCRAM authentication with a very large iteration count. With a large enough     value, the client spends an unbounded amount of CPU time inside PBKDF2 before authentication can fail. A     single attempt ties up a CPU core. Repeated or concurrent attempts exhaust client CPU and can wedge     connection pools. In affected versions, loginTimeout did not fully mitigate this problem. When     loginTimeout expired, the caller could stop waiting, but the worker thread performing the connection     attempt could continue running and burning CPU inside the SCRAM PBKDF2 computation. This issue has been     patched in version 42.7.11.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-782:01 advisory.

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 45 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2026-ef76680eea advisory.

    postgresql-jdbc update and CVE fix.



Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has a package installed that is affected by a vulnerability as referenced in the RLSA-2026:24348 advisory.

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-25030 advisory.

    [42.2.14-4]
    - Limit SCRAM PBKDF2 iterations to prevent DoS via malicious server
    - Resolves: CVE-2026-42198

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:25030 advisory.

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:25030 advisory.

    PostgreSQL is an advanced object-relational database management system. The postgresql-jdbc package     includes the .jar files needed for Java programs to access a PostgreSQL database.

    Security Fix(es):

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2026:25030 advisory.

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:20847-1 advisory.

    This update for postgresql-jdbc fixes the following issue

    - CVE-2026-42198: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication (bsc#1264174).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:24348 advisory.

    PostgreSQL is an advanced object-relational database management system. The postgresql-jdbc package     includes the .jar files needed for Java programs to access a PostgreSQL database.

    Security Fix(es):

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2026:22304 advisory.

    PostgreSQL is an advanced object-relational database management system. The postgresql-jdbc package     includes the .jar files needed for Java programs to access a PostgreSQL database.

    Security Fix(es):

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has a package installed that is affected by a vulnerability as referenced in the RLSA-2026:22304 advisory.

    * jdbc.postgresql.org: pgjdbc: Client-side Denial of Service via malicious SCRAM-SHA-256 authentication     (CVE-2026-42198)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2026:2028-1 advisory.

    This update for postgresql-jdbc fixes the following issue

    - CVE-2026-42198: client-side denial of service via malicious SCRAM-SHA-256 authentication (bsc#1264174).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - pgjdbc is an open source postgresql JDBC Driver. From version 42.2.0 to before version 42.7.11, pgjdbc is     vulnerable to a client-side denial of service during SCRAM-SHA-256 authentication. A malicious server can     instruct the driver to perform SCRAM authentication with a very large iteration count. With a large enough     value, the client spends an unbounded amount of CPU time inside PBKDF2 before authentication can fail. A     single attempt ties up a CPU core. Repeated or concurrent attempts exhaust client CPU and can wedge     connection pools. In affected versions, loginTimeout did not fully mitigate this problem. When     loginTimeout expired, the caller could stop waiting, but the worker thread performing the connection     attempt could continue running and burning CPU inside the SCRAM PBKDF2 computation. This issue has been     patched in version 42.7.11. (CVE-2026-42198)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
322805	Oracle Linux 9 : postgresql-jdbc (ELSA-2026-22304)	Nessus	Oracle Linux Local Security Checks	high
321237	Alibaba Cloud Linux 3 : 0155: postgresql-jdbc (ALINUX3-SA-2026:0155)	Nessus	Alibaba Cloud Linux Local Security Checks	high
320759	MiracleLinux 8 : postgresql-jdbc-42.2.14-4.el8_10 (AXSA:2026-782:01)	Nessus	Miracle Linux Local Security Checks	high
320617	Fedora 45 : junit5 / ongres-scram / ongres-stringprep / postgresql-jdbc (2026-ef76680eea)	Nessus	Fedora Local Security Checks	high
320609	RockyLinux 10 : postgresql-jdbc (RLSA-2026:24348)	Nessus	Rocky Linux Local Security Checks	high
320538	Oracle Linux 8 : postgresql-jdbc (ELSA-2026-25030)	Nessus	Oracle Linux Local Security Checks	high
320521	RockyLinux 8 : postgresql-jdbc (RLSA-2026:25030)	Nessus	Rocky Linux Local Security Checks	high
320454	RHEL 8 : postgresql-jdbc (RHSA-2026:25030)	Nessus	Red Hat Local Security Checks	high
320436	AlmaLinux 8 : postgresql-jdbc (ALSA-2026:25030)	Nessus	Alma Linux Local Security Checks	high
320367	openSUSE 16 Security Update : postgresql-jdbc (openSUSE-SU-2026:20847-1)	Nessus	SuSE Local Security Checks	high
319652	RHEL 10 : postgresql-jdbc (RHSA-2026:24348)	Nessus	Red Hat Local Security Checks	high
319501	RHEL 9 : postgresql-jdbc (RHSA-2026:22304)	Nessus	Red Hat Local Security Checks	high
318275	RockyLinux 9 : postgresql-jdbc (RLSA-2026:22304)	Nessus	Rocky Linux Local Security Checks	high
316845	SUSE SLES15 Security Update : postgresql-jdbc (SUSE-SU-2026:2028-1)	Nessus	SuSE Local Security Checks	high
310989	Linux Distros Unpatched Vulnerability : CVE-2026-42198	Nessus	Misc.	high

Detections

Analytics

CVE-2026-42198

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

high

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high

high