CVE-2024-24941 Overview
CVE-2024-24941 is an input validation weakness ([CWE-20]) affecting JetBrains IntelliJ IDEA versions prior to 2023.3.3. The bundled plugin for JetBrains Space sent an authentication token to an inappropriate URL, exposing credential material to unintended endpoints. JetBrains addressed the issue in IntelliJ IDEA 2023.3.3.
Critical Impact
A leaked Space authentication token can allow an attacker to impersonate the developer against JetBrains Space APIs, accessing source code, issues, and project data.
Affected Products
- JetBrains IntelliJ IDEA versions before 2023.3.3
- IntelliJ IDEA installations with the bundled JetBrains Space plugin enabled
- Developer workstations authenticated to JetBrains Space organizations
Discovery Timeline
- 2024-02-06 - CVE-2024-24941 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-24941
Vulnerability Analysis
The JetBrains Space plugin embedded in IntelliJ IDEA transmits an authentication token when communicating with Space services. In releases before 2023.3.3, the plugin did not adequately validate the destination URL before attaching the token. The token could therefore be sent to a URL outside the intended Space service scope.
The weakness is classified under [CWE-20] Improper Input Validation. It affects confidentiality of session credentials rather than integrity or availability of the IDE itself. An attacker who can influence the target URL or observe traffic to the unintended endpoint gains access to a valid Space token.
Root Cause
The plugin's HTTP client logic failed to constrain the set of URLs eligible to receive the Space authentication header. Missing allowlist enforcement on the request target permitted the token to accompany requests destined for URLs that should not receive it.
Attack Vector
Exploitation occurs over the network without user interaction or prior authentication to the attacker's infrastructure. An attacker capable of steering the plugin toward an attacker-controlled or otherwise unintended URL receives the bearer token in the outbound request. The token can then be replayed against JetBrains Space APIs to access resources authorized to the compromised user.
No public proof-of-concept exploit is available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. See the JetBrains Security Issues Fixed advisory for vendor details.
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Stop Identity AttacksDetection Methods for CVE-2024-24941
Indicators of Compromise
- Outbound HTTPS requests from IntelliJ IDEA processes to non-JetBrains Space hostnames carrying Authorization: Bearer headers
- Unexpected Space API activity originating from IP addresses not associated with the legitimate developer
- Space audit log entries showing token usage from geolocations or user agents inconsistent with the assigned user
Detection Strategies
- Inventory IntelliJ IDEA installations and compare reported versions against the fixed release 2023.3.3 or later
- Review egress proxy or endpoint telemetry for IntelliJ IDEA processes contacting hosts outside the *.jetbrains.space and *.jetbrains.com domains
- Correlate Space API access logs with expected developer activity windows to surface anomalous token reuse
Monitoring Recommendations
- Enable Space audit logging and forward events to a centralized analytics platform for retention and correlation
- Alert on Space personal access token creation, rotation, and API usage from new client fingerprints
- Track IDE update compliance through endpoint management tooling to confirm patched versions are deployed
How to Mitigate CVE-2024-24941
Immediate Actions Required
- Upgrade IntelliJ IDEA to version 2023.3.3 or later on all developer workstations
- Rotate JetBrains Space personal access tokens and OAuth credentials that may have been exposed by vulnerable clients
- Review Space audit logs for anomalous API activity that predates the upgrade
Patch Information
JetBrains resolved CVE-2024-24941 in IntelliJ IDEA 2023.3.3. The fix constrains the destination URLs eligible to receive the Space authentication token. Full details are published in the JetBrains Security Issues Fixed advisory.
Workarounds
- Disable the bundled JetBrains Space plugin in IntelliJ IDEA until the IDE can be upgraded to 2023.3.3 or later
- Restrict developer egress traffic through an authenticated proxy that allowlists JetBrains Space endpoints
- Reduce token scope and lifetime for Space integrations to limit the impact of any leaked credential
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
