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VulnerabilityPublished

CVE-2026-120154: PostgreSQL · Improper Protection of Alternate Path

Affects PostgreSQLSource CVE Database V5

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Mentioned vulnerabilities

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

Data as of 12 Nov 2026, 14:35 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

AI-suggested

Upgrade PostgreSQL to versions 18.7, 17.12, 16.16, 15.20, or 14.25 or later, where this vulnerability has been fixed. No other mitigation is required as the issue is resolved in these official patches.

Description

CVE-2026-120154 is a vulnerability in PostgreSQL's INSERT ... ON CONFLICT feature that allows an attacker with INSERT, UPDATE, and applicable SELECT privileges to bypass row security policies and read every row in a table. This issue affects multiple PostgreSQL versions prior to 18.7, 17.12, 16.16, 15.20, and 14.25. The vulnerability does not allow unauthorized writes. A fix is available in the specified patched versions.

References

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