BIT-postgresql-2026-16239

vendorUSosv

PostgreSQL type confusion in cursor CLOSE + DECLARE executes arbitrary code

view advisory published 2026-08-19Licence: per source

Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-16239US	—	0.68% (52nd)	—	2026-08-13
Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or oth…

references

External citations — patches, advisories, analysis.

https://nvd.nist.gov/vuln/detail/CVE-2026-16239WEB
https://www.postgresql.org/support/security/CVE-2026-16239/ADVISORY

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