What is CVE-2026-42198?

CVE-2026-42198 is a high-severity vulnerability in Pgjdbc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-04-29.

How severe is CVE-2026-42198?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Pgjdbc

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 perf…

EPSS: 0.000 (13.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Pgjdbc — versions >= 42.2.0, < 42.7.11
Postgresql Postgresql_jdbc_driver

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

https://github.com/pgjdbc/pgjdbc/security/advisories/GHSA-98qh-xjc8-98pq (x_refsource_CONFIRM, Vendor Advisory)
https://github.com/pgjdbc/pgjdbc/releases/tag/REL42.7.11 (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-42198?: CVE-2026-42198 is a high-severity vulnerability in Pgjdbc, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-04-29.
How severe is CVE-2026-42198?: High severity. CVSS v3 base score is 7.5 out of 10.