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mise CVE-2026-71477

| EUVDEUVD-2026-60974 MEDIUM
Insecure Preserved Inherited Permissions (CWE-278)
2026-08-18 GitHub_M
6.7
CVSS 3.1 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
6.7 MEDIUM
AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
vuln.today AI
6.7 MEDIUM

Local access with exact UID 1001 required (AV:L, AC:H, PR:L); root must actively run installer (UI:R); binary replacement yields total CIA impact with no scope change.

3.1 AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
4.0 AV:L/AC:H/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
Patch available
Aug 18, 2026 - 16:17 EUVD
Source Code Evidence Fetched
Aug 18, 2026 - 15:57 vuln.today
Analysis Generated
Aug 18, 2026 - 15:57 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Local privilege escalation in mise (jdx/mise), the polyglot dev tool version manager, allows a local user with UID and GID 1001 to gain ownership of a root-installed system binary. Prior to version 2026.7.1, release tar archives embedded non-root UID/GID 1001 metadata from the build environment, and the standalone install script failed to normalize ownership before placing the binary in shared paths such as /usr/local/bin, leaving the installed executable writable by any user matching that UID/GID pair. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

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Install
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Vulnerability AssessmentAI

Exploitation Three specific conditions must all hold simultaneously: (1) a local user account on the target system must have exactly UID 1001 and GID 1001 - the numeric identifiers embedded in the mise release tarball from the build environment; (2) a user with root privileges must run the mise standalone installer targeting a shared system path (MISE_INSTALL_PATH set to /usr/local/bin or similar), which is UI:R in CVSS terms; and (3) no explicit chown normalization was performed after installation (pre-2026.7.1 behavior). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 6.7 Medium is consistent with the constrained but realistic attack path. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade mise to version 2026.7.1 or later, available at https://github.com/jdx/mise/releases/tag/v2026.7.1. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-71477 vulnerability details – vuln.today

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