Medium [CVE-2026-2003] PostgreSQL oidvector discloses a few bytes of memory
This medium-severity Red Hat Linux advisory covers CVE-2026-2003 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 1, postgresql:16.
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Summary
PostgreSQL oidvector discloses a few bytes of memory. Red Hat rates this moderate (CVSS 4.3).
Weakness: CWE-1287. Affected package(s): postgresql:16, postgresql, postgresql:15, postgresql18-main, rhui5/rhua-rhel9:1773670137, postgresql16.
Resolved in Red Hat advisory RHSA-2026:3896 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1.
- postgresql:16-9040020260306102041.rhel9
- postgresql-0:13.23-2.el9_7
- postgresql:15-9020020260309133405.rhel9
- postgresql:16-8100020260227221401.489197e6
- postgresql18-main-18.3-1.2.hum1
- rhui5/rhua-rhel9:1773670137
- postgresql:16-9060020260305153549.rhel9
- postgresql:15-9060020260309125703.rhel9
- postgresql16-0:16.13-1.el10_1
- postgresql16-0:16.13-1.el10_2
- postgresql:15-8100020260227221316.489197e6
- postgresql16-0:16.13-1.el10_0
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:3896
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:3896 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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