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CVE-2026-55448

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ebe9f7805642a6985ab055fa1bffe6435fa743e2014d59151d28f6d76859f4a6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"mise","vendor":"jdx","versions":[{"status":"affected","version":"< 2026.6.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dd0aef866ce0f59948c7d347624abbe7075b7ce06fdd0a7b93756b0d6fddb4ba · sha256:b711d4165b1a95a6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":6.3,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:dd0aef866ce0f59948c7d347624abbe7075b7ce06fdd0a7b93756b0d6fddb4ba · sha256:b711d4165b1a95a6… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-78","description":"CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dd0aef866ce0f59948c7d347624abbe7075b7ce06fdd0a7b93756b0d6fddb4ba · sha256:b711d4165b1a95a6… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph","tags":["x_refsource_CONFIRM"],"url":"https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dd0aef866ce0f59948c7d347624abbe7075b7ce06fdd0a7b93756b0d6fddb4ba · sha256:b711d4165b1a95a6… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dd0aef866ce0f59948c7d347624abbe7075b7ce06fdd0a7b93756b0d6fddb4ba · sha256:b711d4165b1a95a6… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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