What is CVE-2026-118697?

CVE-2026-118697 is a critical-severity vulnerability in Jetbrains Intellij Idea, classified under Improper Certificate Validation. CVSS score: 9.0/10. Published 2026-10-30.

How severe is CVE-2026-118697?

Critical severity. CVSS v3 base score is 9.0 out of 10.

Vulnerability in Jetbrains Intellij Idea

CVE-2026-118697

In JetBrains Toolbox App before 3.9.1 and 3.8.2; IntelliJ IDEA before 2026.3 and 2026.2.4, the jetbrainsd daemon trusted compromised intermediate certificates

Vulnerability class: Improper Certificate Validation

Published 2026-10-30 · last modified 2026-10-31.

CVSS v3 metric

CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

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

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

Frequently asked questions

What is CVE-2026-118697?: CVE-2026-118697 is a critical-severity vulnerability in Jetbrains Intellij Idea, classified under Improper Certificate Validation. CVSS score: 9.0/10. Published 2026-10-30.
How severe is CVE-2026-118697?: Critical severity. CVSS v3 base score is 9.0 out of 10.