CVE-2026-16237: PostgreSQL INSERT · Improper Protection
Source GCVE Database
Not known to be exploited · CVSS 5.4 Medium · fixed in 18.7 : update PostgreSQL when convenient.
Data as of 12 Nov 2026, 16:20 UTC
Thin evidence
One scorer or none| CNA (PostgreSQL) | CVSS 3.1 | 5.4 |
|---|
- Patch
- Available – fixed in 18.7, 17.12, 16.16 +2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 12 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 12 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| PostgreSQL | Affected
| Fixed in
|
| PostgreSQL | Affected
| Fixed in
|
| PostgreSQL | Affected
| Fixed in
|
| PostgreSQL | Affected
| Fixed in
|
| PostgreSQL | Affected
| Fixed in
|
Postgresqlpostgresql/postgresqlpkg:deb/postgresql/postgresqlOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade PostgreSQL to version 18.7, 17.12, 16.16, 15.20, or 14.25 or later, where this vulnerability is fixed. No other mitigation or workaround is indicated in the available data.
Description
CVE-2026-16237 is a vulnerability in PostgreSQL versions prior to 18.7, 17.12, 16.16, 15.20, and 14.25. It involves improper protection in the INSERT ... ON CONFLICT command on auto-updatable views. An attacker with INSERT and UPDATE privileges on the view can read and modify every row in the base table, bypassing the view's WHERE condition, including security_barrier views.