Skip to main content
No exploitation reportedAwaiting NVD analysis

CVE-2026-14661

PostgreSQL dblink and subscriptions can append to arbitrary files

No exploitation reported by the sources we read.

  • Published2026-11-12
  • WeaknessCWE-73

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2026-11-1214:15CVE publishedCNA

Versions per branch

Products declared by the CNA

As PostgreSQL, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • PostgreSQLother versions: not affected
    Affected
    • ≥ 18, < 18.7fixed in 18.7rpm
    • ≥ 17, < 17.12fixed in 17.12rpm
    • ≥ 16, < 16.16fixed in 16.16rpm
    • ≥ 15, < 15.20fixed in 15.20rpm
    • < 14.25fixed in 14.25rpm

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-12

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-14661 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-11-12
  • CNACVSS 3.18.12026-11-12
  • CNAweakness (CWE)CWE-732026-11-12

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Published
2026-11-12
Last Modified
2026-11-12
NVD status
Received

Frequently asked questions

What is CVE-2026-14661?

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.

Is CVE-2026-14661 actively exploited?

Active exploitation of CVE-2026-14661 has not been confirmed.

What is the CVSS score for CVE-2026-14661?

CVE-2026-14661 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Hear about the next vulnerability in your software

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record