CVE-2026-111091

Vulnerability in JetBrains Junie CLI

CVSS score

7.8

EPSS probability

—

Risk score

0.8

Published

19 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

JetBrains Junie CLI Code Execution Vulnerability

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

A vulnerability in JetBrains Junie CLI allows code execution via an untrusted project's MCP server configuration.

Why does it matter?

This vulnerability carries high-level risks that could allow unauthorized individuals to compromise confidentiality, integrity, and availability.

What should be done?

Follow the vendor advisory
Update the product

Chain of evidence and sources2 verified claims

JetBrains Junie CLI 26.8.3 öncesi sürümlerde kod çalıştırılması mümkündür.

S0 · daybreach-canonical S1 · cvelist

Açıklık durumu için yama durumu doğrulanmamıştır.

S0 · daybreach-canonical

Show the technical text from the sources

In JetBrains Junie CLI before 26.8.3 code execution was possible via an untrusted project's MCP server configuration

CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE: CWE-829

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-111091 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	jetbrains	Junie CLI	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
7.8	CVSS V31	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	NVD
7.8	CVSS V3_1	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-111091 is associated with the following CWEs:

CWE-829: Common Weakness Enumeration Entry CWE-829

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-111091 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim

PermissionsGerekmiyor

UserGerekiyor

Official Sources and Advisories

https://www.jetbrains.com/privacy-security/issues-fixed/vendor-advisory

CVSS Vector Radar Chart

7.8 / 10

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone required

User Interaction—

Confidentiality (Gizlilik)Low

Integrity (Bütünlük)High

Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

jetbrains

Weakness Type (CWE & CAPEC)

CWE-829

Similar Vulnerabilities

9.8

CVE-2026-63077 Actively exploited

Get this vulnerability through the API

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