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VulnerabilityPublished

CVE-2026-123832: JetBrains CLion · Untrusted Functionality Inclusion

Affects JetBrains CLionSource CVE Database V5

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Not known to be exploited · CVSS 9.6 Critical : upgrade to 2026.2 as a priority.

Data as of 6 Nov 2026, 17:47 UTC

CVSS 3.1 base score
9.6Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (JetBrains)CVSS 3.19.6
Patch
Available – fixed in 2026.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 6 Nov 2026.

What to do

Upgrade JetBrains CLion to 2026.2.

Affected software

ProductAffectedFixed in
JetBrainsCLionAffected
  • <2026.2
Fixed in
  • 2026.2

AI-suggested

Upgrade JetBrains CLion to version 2026.2 or later, where this vulnerability has been fixed. No other mitigation steps are indicated by the vendor advisory.

Description

CVE-2026-123832 is a critical vulnerability in JetBrains CLion before version 2026.2 that allows code execution in Safe Mode via a JSON compilation database. This flaw involves the inclusion of functionality from an untrusted control sphere, classified under CWE-829. The vulnerability has a high CVSS score of 9.6, indicating severe impact on confidentiality, integrity, and availability. A fix is available in version 2026.2.

References

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