What is CVE-2026-123314?

CVE-2026-123314 is a low-severity vulnerability in Jetbrains Intellij Idea, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 3.1/10. Published 2026-11-06.

How severe is CVE-2026-123314?

Low severity. CVSS v3 base score is 3.1 out of 10.

XXE in Jetbrains Intellij Idea

CVE-2026-123314

In JetBrains IntelliJ IDEA before 2026.3, 2026.2.4 xXE attack was possible via an XML response to an HTTP Client request

Vulnerability class: XXE (XML External Entity)

Published 2026-11-06 · last modified 2026-11-06.

CVSS v3 metric

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

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Jetbrains Intellij Idea

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www.jetbrains.com/privacy-security/issues-fixed/

Frequently asked questions

What is CVE-2026-123314?: CVE-2026-123314 is a low-severity vulnerability in Jetbrains Intellij Idea, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 3.1/10. Published 2026-11-06.
How severe is CVE-2026-123314?: Low severity. CVSS v3 base score is 3.1 out of 10.