CVE-2026-71477: CWE-278: Insecure Preserved Inherited Permissions in jdx mise
CVE-2026-71477 is a vulnerability in jdx mise prior to version 2026.7.1 where release tar archives preserve file ownership with user and group ID 1001. The installation process does not normalize ownership when extracting and moving files, allowing a local user with those IDs to replace a root-installed executable, especially if the installation path is shared like /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
CVE-2026-71477 is a vulnerability in jdx mise prior to version 2026.7.1 where release tar archives preserve file ownership with user and group ID 1001. The installation process does not normalize ownership when extracting and moving files, allowing a local user with those IDs to replace a root-installed executable, especially if the installation path is shared like /usr/local/bin. This issue is fixed in version 2026.7.1.
CVSS v3.1
Score 6.7medium
Affected software
Run 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
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
- Remediation Level
- null
Threat ID: 6a847b9ec6e8be03326654b9
Added to database: 08/18/2026, 15:34:54 UTC
Last enriched: 08/18/2026, 15:51:52 UTC
Last updated: 08/19/2026, 03:41:08 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.