PostgreSQL psql \unrestrict lets superuser of pg_dump origin server execute arbitrary code in psql client

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Affected scope and exposure questions

The current feed maps n/a/PostgreSQL (generic), n/a/PostgreSQL (generic). Check affected ranges and fixed versions before updating.

Recommended response

1. 1Check inventory. Check lockfiles and deployed manifests for n/a/PostgreSQL, n/a/PostgreSQL.
2. 2Review the reported fix. Update n/a/PostgreSQL to 18.5; n/a/PostgreSQL to 18.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

1. Published upstream

   Aug 13, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

2. Source modified

   Aug 29, 2026

   Evidence: source:cvelist:source_dates:source-dates:record

3. First seen by HOL

   Aug 13, 2026

Sources and claim methodology

• Source referencepostgresql.org

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