Medium
mise: Local credential_command executes untrusted config
Type: advisorySources: OSV
mise manages dev tools like node, python, cmake, and terraform. From 2026.3.15 until 2026.6.4, mise loads github.credential_command from local project config before any trust decision, then executes that value with sh -c when resolving a GitHub token. An attacker who can place a .mise.toml in a repository can execute arbitrary shell commands when the victim runs a GitHub-related mise command and no higher-priority GitHub token environment variable is set. This vulnerability is fixed in 2026.6.4.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-55448
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 00:36 UTC · Revision 1
Source evidence
mise: Local credential_command executes untrusted config
core-osv · Original sourcePublished 26 Jun 2026, 16:46 UTC
mise manages dev tools like node, python, cmake, and terraform. From 2026.3.15 until 2026.6.4, mise loads github.credential_command from local project config before any trust decision, then executes that value with sh -c when resolving a GitHub token. An attacker who can place a .mise.toml in a repository can execute arbitrary shell commands when the victim runs a GitHub-related mise command and no higher-priority GitHub token environment variable is set. This vulnerability is fixed in 2026.6.4.
osv:CVE-2026-55448
Complete source record
{
"id": "38708c26e8048fc26a72bfaf4fa5fb523c5c099117310f63993e6644e82d9b26",
"url": "https://osv.dev/vulnerability/CVE-2026-55448",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "mise: Local credential_command executes untrusted config",
"summary": "mise manages dev tools like node, python, cmake, and terraform. From 2026.3.15 until 2026.6.4, mise loads github.credential_command from local project config before any trust decision, then executes that value with sh -c when resolving a GitHub token. An attacker who can place a .mise.toml in a repository can execute arbitrary shell commands when the victim runs a GitHub-related mise command and no higher-priority GitHub token environment variable is set. This vulnerability is fixed in 2026.6.4.",
"evidence": "osv:CVE-2026-55448",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-55448",
"aliases": [
"CVE-2026-55448",
"GHSA-29hf-rm4x-xxph"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/jdx/mise",
"type": "GIT",
"events": [
{
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},
{
"fixed": "3aaf9f04d148e8fbbc7e9b536a18cfab9d88d54a"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
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},
{
"fixed": "2026.6.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
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"source": "DESCRIPTION"
}
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55448.json"
}
}
],
"modified": "2026-10-28T02:30:48.301414845Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55448.json",
"https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph",
"https://nvd.nist.gov/vuln/detail/CVE-2026-55448"
],
"provider_metadata": {
"cwe_ids": [
"CWE-78"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55448.json"
}
},
"related_cves": [
{
"value": "CVE-2026-55448",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 516665,
"published_at": "2026-06-26T16:46:17.28+00:00"
}