What is CVE-2026-12048?

CVE-2026-12048 is a critical-severity vulnerability in Pgadmin.org Pgadmin 4, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2026-06-19.

How severe is CVE-2026-12048?

Critical severity. CVSS v3 base score is 9.3 out of 10.

XSS in Pgadmin.org Pgadmin 4

CVE-2026-12048

Stored cross-site scripting in pgAdmin 4's error-rendering and plan-node-rendering paths. Text returned by a PostgreSQL server (ErrorResponse messages, including object names quoted back inside relation-does-not-exist errors and inside EXP…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

Affected products

Pgadmin.org Pgadmin 4 — versions 6.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting
CWE-116 — Improper Encoding or Escaping of Output

References

f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (issue-tracking)
f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (patch)

Frequently asked questions

What is CVE-2026-12048?: CVE-2026-12048 is a critical-severity vulnerability in Pgadmin.org Pgadmin 4, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2026-06-19.
How severe is CVE-2026-12048?: Critical severity. CVSS v3 base score is 9.3 out of 10.