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CVE-2026-123831VulnerabilityPublished

JetBrains CLion: Mehrere Schwachstellen ermöglichen Codeausführung

Affects Bundesamt für Sicherheit in der Informationstechnik JetBrainsSource GCVE Database

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Authoritative record:CVE-2026-123831· Critical 9.6

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

Data as of 9 Nov 2026, 12:36 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 9 Nov 2026.

What to do

Upgrade CLion to 2026.2.

Affected software

ProductAffectedFixed in
JetBrainsCLionAffected
  • =0
Fixed in
  • 2026.2

AI-suggested

Users should update to JetBrains CLion version 2026.2, which contains fixes for these vulnerabilities. Applying this official update fully mitigates the risk associated with these code execution flaws.

Description

Multiple vulnerabilities in JetBrains CLion, an integrated development environment for C and C++ programming, allow code execution. These issues affect versions prior to and including 2026.2. A fix is available in version 2026.2.

References

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