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CVE-2026-123278VulnerabilityPublished Updated

JetBrains IntelliJ IDEA: Mehrere Schwachstellen

Affects Bundesamt für Sicherheit in der Informationstechnik JetBrainsSource GCVE Database

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Authoritative record:CVE-2026-123278· Medium 6.7

Not known to be exploited · CVSS 6.7 Medium : upgrade to 2026.3 when convenient.

Data as of 9 Nov 2026, 11:23 UTC

CVSS 3.1 base score
6.7Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (JetBrains)CVSS 3.16.7
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 2026.3
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/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 8 Nov 2026.

What to do

Upgrade IntelliJ IDEA to 2026.3.

Affected software

ProductAffectedFixed in
JetBrainsIntelliJ IDEAAffected
  • <2026.3
Fixed in
  • 2026.3

AI-suggested

Users should upgrade to IntelliJ IDEA version 2026.3 or later to remediate these vulnerabilities. No additional mitigation guidance is provided.

Description

Multiple vulnerabilities have been identified in JetBrains IntelliJ IDEA, a Java development environment. These issues affect versions prior to and including 2026.3. A fix is available in version 2026.3.

References

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