What is CVE-2026-49383?

CVE-2026-49383 is a low-severity vulnerability in Jetbrains Intellij Idea, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 3.3/10. Published 2026-05-29.

How severe is CVE-2026-49383?

Low severity. CVSS v3 base score is 3.3 out of 10.

XXE in Jetbrains Intellij Idea

CVE-2026-49383

In JetBrains IntelliJ IDEA before 2026.1 xXE in the UI Designer form parser was possible

Vulnerability class: XXE (XML External Entity)

Published 2026-05-29 · last modified 2026-07-22.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.001 (3.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 3rd percentile — 3.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000

Affected products

Jetbrains Intellij Idea — versions 0
Jetbrains Intellij Idea

Weakness classification (CWE)

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

References

www.jetbrains.com/privacy-security/issues-fixed/ (Vendor Advisory)

Frequently asked questions

What is CVE-2026-49383?: CVE-2026-49383 is a low-severity vulnerability in Jetbrains Intellij Idea, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 3.3/10. Published 2026-05-29.
How severe is CVE-2026-49383?: Low severity. CVSS v3 base score is 3.3 out of 10.