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CVE-2026-116321VulnerabilityPublished

PostgreSQL array element assignment · Improper Null Termination

Source GCVE Database

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Authoritative record:CVE-2026-116321· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium · fixed in 18.7 : update PostgreSQL when convenient.

Data as of 12 Nov 2026, 16:33 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, 16.16 +2
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 to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
PostgreSQLAffected
  • >=18 <18.7
Fixed in
  • 18.7
PostgreSQLAffected
  • >=17 <17.12
Fixed in
  • 17.12
PostgreSQLAffected
  • >=16 <16.16
Fixed in
  • 16.16
PostgreSQLAffected
  • >=15 <15.20
Fixed in
  • 15.20
PostgreSQLAffected
  • <14.25
Fixed in
  • 14.25
Postgresqlpostgresql/postgresqlpkg:deb/postgresql/postgresqlOther threatsAffected
  • <14.25
Fixed in
  • 14.25

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Fixed versions are available starting from PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25. Users should upgrade to these or later versions to remediate the vulnerability. No other mitigation or workaround is indicated.

Description

A vulnerability in PostgreSQL prior to versions 18.7, 17.12, 16.16, 15.20, and 14.25 allows a database user to disclose server memory due to improper null termination in array element assignment. This occurs when the final byte of a fixed-length name value is changed to a nonzero byte and then processed as a C string.

References

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