CVE-2026-49366: In JetBrains IntelliJ IDEA before 2026.1.1 command injection was possible via filename completion

Q: How do I fix CVE-2026-49366?

intellij idea: upgrade to 2026.1.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-49366 being exploited?

CVE-2026-49366 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-49366 affect?

CVE-2026-49366 affects intellij idea. Severity is high (CVSS 7.8). In JetBrains IntelliJ IDEA before 2026.1.1 command injection was possible via filename completion

Routine

HIGH 7.8UPGRADE

CVE-2026-49366 is a high-severity flaw (CVSS 7.8) affecting intellij idea. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In JetBrains IntelliJ IDEA before 2026.1.1 command injection was possible via filename completion

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-05-29
Last modified	2026-07-22

Publisher (CNA): JetBrains s.r.o. · Vendor: jetbrains

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-29 19:16 UTCPublished CVE record published
2026-07-22 06:10 UTCUpdated Record last modified

jetbrains intellij idea UPGRADE

Affected: < 2026.1.1

Fixed in: 2026.1.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy intellij-idea || rpm -q intellij-idea || intellij-idea --version

2. UPGRADE to 2026.1.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade intellij-idea

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade intellij-idea

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-49366?

intellij idea: upgrade to 2026.1.1. Exact commands for each OS are on this page.

Is CVE-2026-49366 being exploited?

CVE-2026-49366 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-49366 affect?

CVE-2026-49366 affects intellij idea. Severity is high (CVSS 7.8). In JetBrains IntelliJ IDEA before 2026.1.1 command injection was possible via filename completion

How urgent is CVE-2026-49366?

Priority 37/100. High severity

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References

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