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CVE-2026-6476

28
FAUCET Score

SQL injection in PostgreSQL pg_createsubscriber allows an attacker with pg_create_subscription rights to execute arbitrary SQL as a superuser. The attack takes effect when pg_createsubscriber next runs. Within major versions 17 and 18, minor versions before PostgreSQL 18.4 and 17.10 are affected. Versions before PostgreSQL 17 are unaffected.

First published: May 14, 2026Last modified: May 14, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 17.0, < 17.10CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
>= 18.0, < 18.4CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.29%
Probability of exploitation in next 30 days
EPSS Percentile
20.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0029 is in the 2nd percentile among its peer group of 5,537 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

ubuntupatch availablevia ubuntu_usn
Product: postgresql-14 (jammy)Fixed in: 14.23-0ubuntu0.22.04.1
ubuntupatch availablevia ubuntu_usn
Product: postgresql-16 (noble)Fixed in: 16.14-0ubuntu0.24.04.1
ubuntupatch availablevia ubuntu_usn
Product: postgresql-17 (questing)Fixed in: 17.10-0ubuntu0.25.10.1
ubuntupatch availablevia ubuntu_usn
Product: postgresql-18 (resolute)Fixed in: 18.4-0ubuntu0.26.04.1

Vendor Advisories (1)

ubuntuUSN-8294-1

PostgreSQL vulnerabilities

May 21, 2026

References

postgresql.org / support/security/CVE-2026-6476
PatchVendor Advisory