CVE-2026-14661 (GCVE-0-2026-14661)

Vulnerability from cvelistv5 – Published: 2026-11-12 14:15 – Updated: 2026-11-12 21:42
VLAI
Title
PostgreSQL dblink and subscriptions can append to arbitrary files
Summary
External control of file name in PostgreSQL dblink and CREATE/ALTER SUBSCRIPTION allows a user to achieve persistent denial of service, via appending invalid data to a chosen file. Specifically, the "sslkeylogfile" connection parameter appends data, in NSS keylog format, to a file of the user's choosing. This "sslkeylogfile" mechanism cannot add arbitrary bytes. Within major version 18, minor versions before PostgreSQL 18.7 are affected. Versions before PostgreSQL 18 are also affected if libpq version 18 or later is installed and in use by the server.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
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-73 - External Control of File Name or Path
Assigner
PostgreSQL CNA under the redhat root
CNA scorecard C 68/100 over 155 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
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 Andrey Krasichkov, b.altawil, and Zsolt Parragi for reporting this problem.
Show details on NVD website
To clipboard 

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