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pgAdmin 4 Issues Critical Security Update Addressing Seven Vulnerabilities Including Prior Patch Failures

The pgAdmin 4 development team has released version 9.17 to resolve seven vulnerabilities in the popular PostgreSQL database management tool. The update covers two newly discovered issues rated Critical, one Critical flaw stemming from incomplete remediation in the previous 9.16 release, and four additional vulnerabilities. Among the new flaws is CVE-2026-17566, an OS command injection vulnerability in the query-based data export feature caused by insufficient SQL validation. Another Critical issue, CVE-2026-17349, allows duplication of shared servers to inadvertently copy stored database credentials belonging to other users. The incomplete fix for CVE-2026-12045 led to CVE-2026-17351, which bypasses the read-only restrictions of the AI Assistant due to differing string literal interpretations between the SQL parsing library and PostgreSQL.

Security NEXTTranslated from Japanese

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The development team behind the widely used database management tool pgAdmin 4 has published a security update that resolves multiple vulnerabilities, including incomplete fixes from the prior release.

On 30 July 2026 the team released version 9.17, which addresses a total of seven vulnerabilities. This includes three issues that were supposed to have been fixed in version 9.16 but remained unresolved, plus two newly identified flaws. Three of the vulnerabilities carry the highest severity rating of Critical.

One newly discovered Critical vulnerability, tracked as CVE-2026-17566, resides in the query-based data export functionality. Insufficient validation of SQL input allows an attacker to perform OS command injection, potentially executing arbitrary commands on the underlying operating system.

A second Critical issue, CVE-2026-17349, affects the server duplication feature. When a shared server is copied, the operation can inadvertently transfer stored database credentials that belong to other users, leading to unauthorized access.

The update also corrects an incomplete remediation of CVE-2026-12045. Because of differences in how the SQL parsing library and PostgreSQL interpret string literals, the read-only restrictions of the AI Assistant can be bypassed, resulting in the new Critical vulnerability CVE-2026-17351.

PostgreSQLpgAdmin 4CVE-2026-17566CVE-2026-17349CVE-2026-17351
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