CVE-2026-71477: CWE-278: Insecure Preserved Inherited Permissions in jdx mise
mise manages dev tools like node, python, cmake, and terraform. Prior to 2026.7.1, release tar archives record mise/bin/mise with user and group ID 1001 and packaging/standalone/install.envsubst extracts and moves it without normalizing ownership, allowing a local user with those IDs to replace a root-installed executable, especially when MISE_INSTALL_PATH targets a shared location such as /usr/local/bin. This issue is fixed in version 2026.7.1.
AI Analysis
Technical Summary
The vulnerability involves insecure preserved inherited permissions in the jdx mise tool, which manages development tools such as node, python, cmake, and terraform. Specifically, release tar archives record mise/bin/mise with user and group ID 1001. The packaging/standalone/install.envsubst script extracts and moves this file without normalizing ownership, enabling a local user with matching user and group IDs to replace a root-installed executable. This risk is heightened when MISE_INSTALL_PATH targets shared locations like /usr/local/bin. The vulnerability is addressed in version 2026.7.1.
Potential Impact
A local user with user and group ID 1001 can replace a root-installed executable by exploiting the lack of ownership normalization during installation. This can lead to full compromise of the system with root privileges, impacting confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Upgrade to jdx mise version 2026.7.1 or later, where this issue is fixed. There is no official remediation level stated beyond this fix. Until upgrading, avoid installing mise in shared locations accessible by unprivileged users with matching user and group IDs.
CVE-2026-71477: CWE-278: Insecure Preserved Inherited Permissions in jdx mise
Description
mise manages dev tools like node, python, cmake, and terraform. Prior to 2026.7.1, release tar archives record mise/bin/mise with user and group ID 1001 and packaging/standalone/install.envsubst extracts and moves it without normalizing ownership, allowing a local user with those IDs to replace a root-installed executable, especially when MISE_INSTALL_PATH targets a shared location such as /usr/local/bin. This issue is fixed in version 2026.7.1.
CVSS v3.1
Score 6.7medium
Affected software
jdx
mise
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability involves insecure preserved inherited permissions in the jdx mise tool, which manages development tools such as node, python, cmake, and terraform. Specifically, release tar archives record mise/bin/mise with user and group ID 1001. The packaging/standalone/install.envsubst script extracts and moves this file without normalizing ownership, enabling a local user with matching user and group IDs to replace a root-installed executable. This risk is heightened when MISE_INSTALL_PATH targets shared locations like /usr/local/bin. The vulnerability is addressed in version 2026.7.1.
Potential Impact
A local user with user and group ID 1001 can replace a root-installed executable by exploiting the lack of ownership normalization during installation. This can lead to full compromise of the system with root privileges, impacting confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
Upgrade to jdx mise version 2026.7.1 or later, where this issue is fixed. There is no official remediation level stated beyond this fix. Until upgrading, avoid installing mise in shared locations accessible by unprivileged users with matching user and group IDs.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-06T19:56:23.724Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a847b9ec6e8be03326654b9
Added to database: 08/18/2026, 15:34:54 UTC
Last enriched: 08/18/2026, 15:51:52 UTC
Last updated: 10/03/2026, 14:46:10 UTC
Views: 72
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