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VulnerabilityPublished

CVE-2026-116310: PostgreSQL · Use After Free

Affects PostgreSQLSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium : upgrade to 18.7 or 17.12 when convenient.

Data as of 12 Nov 2026, 14:49 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (PostgreSQL)CVSS 3.14.3
Patch
Available – fixed in 18.7, 17.12
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 12 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 PostgreSQL to 18.7 or 17.12.

Affected software

ProductAffectedFixed in
PostgreSQLAffected
  • >=18 <18.7
Fixed in
  • 18.7
PostgreSQLAffected
  • >=17 <17.12
Fixed in
  • 17.12

AI-suggested

Upgrade PostgreSQL to version 17.12 or later if running a 17.x release, or to version 18.7 or later if running an 18.x release. These versions contain the official fixes for this vulnerability.

Description

CVE-2026-116310 is a use-after-free vulnerability in PostgreSQL affecting versions 17 and 18 prior to 17.12 and 18.7 respectively. It occurs in the COPY FROM error reporting code path and can lead to disclosure of portions of server memory when a longer input row follows an ignored or nullified conversion error. The file_fdw extension also reaches the same vulnerable code path. This vulnerability has a CVSS score of 4.3, indicating medium severity.

References

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