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IntelliJ IDEA CVE-2026-86503

| EUVDEUVD-2026-72519 LOW
Server-Side Request Forgery (SSRF) (CWE-918)
2026-09-07 JetBrains GHSA-qjpc-rj7r-4gjr
3.3
CVSS 3.1 · Vendor: JetBrains

Severity by source

Vendor (JetBrains) PRIMARY
3.3 LOW
AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
vuln.today AI
3.3 LOW

Local vector because attack requires opening a local project file; UI:R for required developer action; C:L for limited SSRF-based information disclosure only.

3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (JetBrains).

CVSS VectorVendor: JetBrains

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

3
Patch available
Sep 07, 2026 - 17:17 EUVD
Analysis Generated
Sep 07, 2026 - 17:14 vuln.today
CVE Published
Sep 07, 2026 - 16:26 cve.org
LOW 3.3

DescriptionCVE.org

In JetBrains IntelliJ IDEA before 2026.2.2 opening an untrusted project could trigger SSRF via Kubernetes spec-source URL fetching

AnalysisAI

Server-Side Request Forgery (SSRF) in JetBrains IntelliJ IDEA before version 2026.2.2 allows an attacker to probe internal network resources by embedding a malicious Kubernetes spec-source URL inside a crafted project file. When a developer opens the untrusted project, the IDE automatically fetches the attacker-controlled URL, causing outbound requests to arbitrary hosts reachable from the developer's machine. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation The victim must open a malicious project file in IntelliJ IDEA before version 2026.2.2 that contains a crafted Kubernetes spec-source URL directive pointing to an attacker-controlled or internal-network target. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 score of 3.3 (Low) reflects the realistic attack profile well: AV:L requires the victim to open a locally-present project file, UI:R confirms required user interaction, and C:L caps the impact at partial information disclosure. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade IntelliJ IDEA to version 2026.2.2 or later, which addresses the untrusted URL fetching behavior in Kubernetes spec-source handling. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-86503 vulnerability details – vuln.today

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