CVE-2026-120154 (GCVE-0-2026-120154)

Vulnerability from cvelistv5 – Published: 2026-11-12 14:15 – Updated: 2026-11-12 21:42
VLAI
Title
PostgreSQL INSERT ... ON CONFLICT can read rows despite row security policies
Summary
Improper protection in PostgreSQL INSERT ... ON CONFLICT allows an attacker having INSERT, UPDATE, and applicable SELECT privileges on the table to read every row despite row security policies, via iterated INSERT ... ON CONFLICT DO UPDATE. Unlike CVE-2026-16237, this does not facilitate improper writes. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-12 21:10 UTC
CWE
  • CWE-424 - Improper Protection of Alternate Path
Assigner
References
Impacted products
Vendor Product Version
n/a PostgreSQL Affected: 18 , < 18.7 (rpm)
Affected: 17 , < 17.12 (rpm)
Affected: 16 , < 16.16 (rpm)
Affected: 15 , < 15.20 (rpm)
Affected: 0 , < 14.25 (rpm)
Credits
The PostgreSQL project thanks Peter Geoghegan, Zsolt Parragi, Only see myself, Nicholas Carlini, Joao Detomini, Josef Šimánek, and Qing Xu for reporting this problem.
Show details on NVD website
To clipboard 

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