pgpartman Pg_partman up to 5.4.x Exception pg_jobmon.add_job p_parent_table injection

Summaryinfo

A vulnerability labeled as very critical has been found in pgpartman Pg_partman up to 5.4.x. This issue affects the function pg_jobmon.add_job of the component Exception Handler. Such manipulation of the argument p_parent_table leads to injection. This vulnerability is traded as CVE-2026-61819. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in pgpartman Pg_partman up to 5.4.x. Affected by this issue is the function pg_jobmon.add_job of the component Exception Handler. The manipulation of the argument p_parent_table with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, when pg_jobmon is installed and part_config.jobmon is true, exception handlers in multiple pg_partman functions place p_parent_table verbatim inside a SQL string literal used to call pg_jobmon.add_job(). A partman_user can create a parent-table name containing a single quote that terminates the literal and injects SQL when an affected exception path runs. If pg_partman_bgw reaches that path, the injected SQL executes with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, permitting database-wide compromise and operating-system command execution as the PostgreSQL service account. The persistent part_config row can trigger the escalation again on later maintenance ticks. This issue is fixed in version 5.5.0.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-61819 since 07/10/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/18/2026). This vulnerability is assigned to T1055 by the MITRE ATT&CK project.

Upgrading to version 5.5.0 eliminates this vulnerability.

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Productinfo

Vendor

• pgpartman

Name

• Pg_partman

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4

Website

• Product: https://github.com/pgpartman/pg_partman/

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