CVE-2026-86503: CWE-918 in JetBrains IntelliJ IDEA
Description
CVE-2026-86503 is a vulnerability in JetBrains IntelliJ IDEA before version 2026.2.2 where opening an untrusted project could trigger a Server-Side Request Forgery (SSRF) via Kubernetes spec-source URL fetching. The vulnerability has a low severity with a CVSS score of 3.3. It requires user interaction and local access to exploit. No known exploits are reported in the wild. The affected versions are all versions prior to 2026.2.2.
CVSS v3.1
Score 3.3low
Affected software
JetBrains
IntelliJ IDEA
pkg:maven/com.jetbrains/intellij-ideaRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-86503) affects JetBrains IntelliJ IDEA versions before 2026.2.2. It involves a Server-Side Request Forgery (SSRF) issue triggered when opening an untrusted project that fetches Kubernetes spec-source URLs. The CVSS 3.1 score is 3.3, indicating low severity, with attack vector local, low complexity, no privileges required, user interaction required, and limited confidentiality impact. No official patch links are provided in the input data, and no known exploits are reported.
Potential Impact
An attacker who convinces a user to open a specially crafted untrusted project in IntelliJ IDEA before 2026.2.2 could cause the IDE to perform SSRF requests via Kubernetes spec-source URL fetching. This could potentially allow limited information disclosure but does not impact integrity or availability. The attack requires user interaction and local access, limiting the risk.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official patch links are provided, users should monitor JetBrains advisories for updates. Avoid opening untrusted projects until a fix is confirmed.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- JetBrains
- Date Reserved
- 2026-09-07T16:13:40.978Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9ee85bacd9273b49f0e44c
Added to database: 09/07/2026, 16:37:47 UTC
Last enriched: 09/15/2026, 01:19:15 UTC
Last updated: 10/22/2026, 13:15:24 UTC
Views: 111
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