CVE Explorer

CVE-2026-46420

setup-php is a GitHub action to set up PHP with extensions, php.ini configuration, coverage drivers, and tools. From 2.25.0 prior to 2.37.1, shivammathur/setup-php resolves the PHP version from repository-controlled files such as .php-version, composer.lock through platform-overrides.php, and composer.json through config.platform.php, and insufficiently constrains those values before incorporating them into generated shell or PowerShell setup scripts, allowing command injection on a GitHub Actio

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:e6f4d92ce837f577636bfbcd93e85f0cbfa010d409795da45bd99a68000eea18

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"setup-php","vendor":"shivammathur","versions":[{"status":"affected","version":">= 2.25.0, < 2.37.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:3d4e52eaa57072e02ba75e667121657d9d7e69313558fb37c157229138947b7b · sha256:beea3f233047c271… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:3d4e52eaa57072e02ba75e667121657d9d7e69313558fb37c157229138947b7b · sha256:beea3f233047c271… · /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:v2:3d4e52eaa57072e02ba75e667121657d9d7e69313558fb37c157229138947b7b · sha256:beea3f233047c271… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions

{"name":"https://github.com/shivammathur/setup-php/commit/eeef37e059fb5368a5bc8ed8ce45ff54bd39b80b","tags":["x_refsource_MISC"],"url":"https://github.com/shivammathur/setup-php/commit/eeef37e059fb5368a5bc8ed8ce45ff54bd39b80b"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3d4e52eaa57072e02ba75e667121657d9d7e69313558fb37c157229138947b7b · sha256:beea3f233047c271… · /containers/cna/references/1

{"name":"https://github.com/shivammathur/setup-php/releases/tag/2.37.1","tags":["x_refsource_MISC"],"url":"https://github.com/shivammathur/setup-php/releases/tag/2.37.1"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3d4e52eaa57072e02ba75e667121657d9d7e69313558fb37c157229138947b7b · sha256:beea3f233047c271… · /containers/cna/references/2

{"name":"https://github.com/shivammathur/setup-php/security/advisories/GHSA-pqwm-q9pv-ph8r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/shivammathur/setup-php/security/advisories/GHSA-pqwm-q9pv-ph8r"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:3d4e52eaa57072e02ba75e667121657d9d7e69313558fb37c157229138947b7b · sha256:beea3f233047c271… · /containers/cna/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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