CVE-2026-41882
Jetbrains Intellij Idea 2024.3.7.1 … 2026.1.1
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:NCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-41882 is a high-severity Link Following (CWE-59) vulnerability in Jetbrains Intellij Idea. Its CVSS base score is 7.4 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Path Interception (T1034); ranked at the 33th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-6 (Least Privilege) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-41882 affects JetBrains IntelliJ IDEA versions prior to 2024.3.7.1, 2025.1.7.1, 2025.2.6.2, 2025.3.4.1, and 2026.1.1. The vulnerability, published on 2026-04-30, enables reading arbitrary local files via the built-in web server and is classified under CWE-59 (Improper Link Resolution Before File Access Check). It carries a CVSS v3.1 base score of 7.4 (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N), indicating high severity due to significant confidentiality impact.
Attackers can exploit this vulnerability remotely over the network with low complexity and no required privileges, though user interaction is necessary, such as a victim accessing a crafted URL served by IntelliJ IDEA's built-in web server. Exploitation changes the attack scope and allows the attacker to read sensitive arbitrary local files on the victim's system, potentially exposing credentials, source code, or other confidential data without impacting integrity or availability.
JetBrains has released patches in the listed versions to mitigate the issue. Security practitioners should consult the advisory at https://www.jetbrains.com/privacy-security/issues-fixed/ for full details on affected versions, patch instructions, and verification steps.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-26368
Vulnerability Data
In JetBrains IntelliJ IDEA before 2024.3.7.1, 2025.1.7.1, 2025.2.6.2, 2025.3.4.1, 2026.1.1 reading arbitrary local files was possible via built-in web server
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V15.4.2
Mitigating Controls (NIST 800-53 r5) AI
Proper enforcement of access authorizations on the resolved target resource stops a link from reaching an unintended object.
Least-privilege limits the damage an attacker can cause after following an unintended link.
Validating file-name inputs can reject or canonicalize names that resolve to links before access occurs.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Secure SDLC practices directly require code to validate paths and avoid unsafe link following.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing can detect link-following flaws before release.
Secure SDLC practices can mandate link-resolution checks and canonicalization before file access.
Application security requirements can explicitly require safe handling of symbolic links and path traversal.
Secure architecture principles include input validation and safe file-access design patterns.
Secure coding standards directly address canonicalization and symlink attacks during implementation.
Access-control rules can limit which files are reachable, reducing exposure to malicious links.