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CVE-2026-55448

MEDIUM Exploitation: PoC
6.3
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-55448
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-16 21:59 UTC
Published
2026-06-26 16:46 UTC
Last updated
2026-06-27 02:47 UTC
Primary CWE
CWE-78
CWE-78: Improper Neutralization of Special Elements used in …
Vendor / Product
jdx / mise
Sources
cve.org  ·  NVD

Severity & Metrics

6.3 MEDIUM CVSS 3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
jdx mise — < 2026.6.4
Weakness (CWE)
CWESourceDescription
CWE-78 cna CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.3 MEDIUM 3.1 cna CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
References (1)
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