Security readout for executives and security teams
Plain-English summary
A malicious or compromised IntelliJ IDEA project could execute code through its development-container configuration before the user grants project trust. Successful exploitation could expose developer credentials, source code, and workstation integrity. The issue affects IntelliJ IDEA releases before 2026.2 and is rated high severity.
Executive priority
Prioritize prompt remediation on developer systems that access proprietary code, signing material, cloud credentials, or production environments. Broader emergency response is not supported by the supplied evidence because active exploitation is unconfirmed, but the potential impact of code execution makes delayed patching inappropriate.
Technical view
CVE-2026-64811 is a pre-project-trust code-execution flaw involving development-container configuration in IntelliJ IDEA before 2026.2. CVSS 3.1 scores it 7.8: local attack vector, low complexity, no privileges, and required user interaction, with high confidentiality, integrity, and availability impacts. It is classified as CWE-829.
Likely exposure
Exposure is most likely where developers use IntelliJ IDEA before 2026.2 and open projects containing untrusted or externally supplied development-container configuration. The supplied affected-version metadata is inconsistent, listing version "0" while the description states releases before 2026.2; confirm inventories against JetBrains guidance.
Exploitation context
The CVSS vector indicates local access and user interaction are required, so this is not described as remotely exploitable without user involvement. The source bundle does not establish public exploitation, available exploit code, or active attacks. The CVE is not listed as KEV in the supplied data.
Researcher notes
The record identifies execution before project trust through development-container configuration, but provides no detailed vulnerable component, attack sequence, indicators, or workaround. The affected array conflicts with the narrative version boundary. Treat “before 2026.2” as the stated scope while verifying exact editions and builds through JetBrains.
Mitigation direction
- Upgrade IntelliJ IDEA to version 2026.2 or later after confirming JetBrains guidance.
- Avoid opening untrusted projects with development-container configuration on sensitive developer workstations.
- Restrict access to credentials and production secrets from developer environments where practical.
- Review JetBrains security guidance for any additional product-specific mitigations.
Validation and detection
- Inventory installed IntelliJ IDEA versions and identify releases earlier than 2026.2.
- Identify users who open external repositories or use development-container configurations.
- Confirm upgraded installations report version 2026.2 or later.
- Review endpoint telemetry for unexpected processes associated with recently opened untrusted projects.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-829: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-64811 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H1.85.9JetBrainsVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.jetbrains.com/privacy-security/issues-fixed/CVE reference, JetBrains
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Inclusion of Functionality from Untrusted Control Sphere
Inclusion of Functionality from Untrusted Control Sphere represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.