๐Ÿ” CVE Alert

CVE-2026-14666

MEDIUM 4.2

PostgreSQL row security caching disregards role modifications

CVSS Score
4.2
EPSS Score
0.0%
EPSS Percentile
0th

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

CWE CWE-1250
Vendor n/a
Product postgresql
Ecosystems
Industries
Technology
Published Aug 13, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

n/a / PostgreSQL
18 < 18.5 17 < 17.11 16 < 16.15 15 < 15.19 0 < 14.24

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
postgresql.org: https://www.postgresql.org/support/security/CVE-2026-14666/

Credits

The PostgreSQL project thanks Staroverov Ilja and Shinya Kato for reporting this problem.