pgAdmin 4 up to 9.18 Connection Service servicefile information disclosure

Summaryinfo

A vulnerability classified as problematic was found in pgAdmin 4 up to 9.18. The affected element is an unknown function of the component Connection Service. Such manipulation of the argument servicefile leads to information disclosure. This vulnerability is referenced as CVE-2026-116245. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in pgAdmin 4 up to 9.18. It has been rated as problematic. Affected by this issue is an unknown function of the component Connection Service. The manipulation of the argument servicefile with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

libpq looks a connection service up in the service file of the operating-system account running pgAdmin 4, and an entry there can hold a password or name a password file or client certificate. In server mode any user could set a server's Service, or a "service" connection parameter, to one of those entries and connect with its credentials. A PGPASSWORD or PGSERVICE variable set for that account was likewise used by libpq for every connection without a value of its own and passed on to the utilities, and pg_dumpall read a maintenance database name such as "service=..." as a connection string. The fix adds the SERVER_MODE_ALLOWED_SERVICES setting, empty by default: in server mode only a listed service can be used, the servicefile parameter is refused, and PGPASSWORD and PGSERVICE are removed from pgAdmin's environment at startup. The allowlist is checked again on the final connection string, and the pg_dumpall database name is wrapped as a connection string. This issue affects pgAdmin 4: before 9.19.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-116245 since 10/25/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 9.19 eliminates this vulnerability.

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Productinfo

Vendor

• pgAdmin

Name

• 4

Version

• 9.0
• 9.1
• 9.2
• 9.3
• 9.4
• 9.5
• 9.6
• 9.7
• 9.8
• 9.9
• 9.10
• 9.11
• 9.12
• 9.13
• 9.14
• 9.15
• 9.16
• 9.17
• 9.18

CPE 2.3info

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CPE 2.2info

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