Use of Externally-Controlled Format String The advisory has been revoked - it doesn't affect any version of package postgresql18 (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-POSTGRESQL18-16791639
- published22 May 2026
- disclosed14 May 2026
Introduced: 14 May 2026
CVE-2026-6474 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream postgresql18 package and not the postgresql18 package as distributed by RHEL.
Externally-controlled format string in PostgreSQL timeofday() function allows an attacker to retrieve portions of server memory, via crafted timezone zones. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2477441
- https://access.redhat.com/security/cve/CVE-2026-6474
- https://access.redhat.com/errata/RHSA-2026:22878
- https://access.redhat.com/errata/RHSA-2026:27718
- https://access.redhat.com/errata/RHSA-2026:27742
- https://access.redhat.com/errata/RHSA-2026:27743
- https://www.postgresql.org/support/security/CVE-2026-6474/