Vulnerability in PostgreSQL JDBC (July 6, 2026)

A vulnerability has been discovered in PostgreSQL JDBC. It allows an attacker to bypass security policy.

CSIRTS triage

What: A vulnerability allows an attacker to bypass security policy.
Who is affected: Deployments using PostgreSQL JDBC are affected.
Urgency: Remediation is necessary to prevent unauthorized access due to the security policy bypass.
Action: Update to the latest version of PostgreSQL JDBC.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-542910.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-54291	coverage & exploitation status	NVD · CVE.org

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