CVE-2026-6473Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds.
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Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
- CVSS
- 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-190
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Aug 25, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
postgresql postgresql postgresql:postgresql | before 14.23; from 15.0 before 15.18; from 16.0 before 16.14; from 17.0 before 17.10; from 18.0 before 18.4 | NVD |
References
- https://www.postgresql.org/support/security/CVE-2026-6473/patch, vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:22878
- https://access.redhat.com/errata/RHSA-2026:26181
- https://access.redhat.com/errata/RHSA-2026:26203
- https://access.redhat.com/errata/RHSA-2026:26204
- https://access.redhat.com/errata/RHSA-2026:26524
- https://access.redhat.com/errata/RHSA-2026:26525
- https://access.redhat.com/errata/RHSA-2026:26561
- https://access.redhat.com/errata/RHSA-2026:27718
- https://access.redhat.com/errata/RHSA-2026:27738
- https://access.redhat.com/errata/RHSA-2026:27741
- https://access.redhat.com/errata/RHSA-2026:27742
- https://access.redhat.com/errata/RHSA-2026:27743
- https://access.redhat.com/errata/RHSA-2026:28037
- https://access.redhat.com/errata/RHSA-2026:28143
- https://access.redhat.com/errata/RHSA-2026:28208
- https://access.redhat.com/errata/RHSA-2026:28999
- https://access.redhat.com/errata/RHSA-2026:29212
- https://access.redhat.com/errata/RHSA-2026:29815
- https://access.redhat.com/errata/RHSA-2026:29904
- https://access.redhat.com/errata/RHSA-2026:29953
- https://access.redhat.com/errata/RHSA-2026:32983
- https://access.redhat.com/errata/RHSA-2026:32994
- https://access.redhat.com/errata/RHSA-2026:33441
- https://access.redhat.com/errata/RHSA-2026:33497
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.