High
Synk Sweater Comb < 3.8.8 Command Injection via .vervet.yaml Branch Name
Type: advisorySources: OSV
Synk Sweater Comb before 3.8.8 contains a command injection vulnerability that allows an attacker who controls the .vervet.yaml configuration file to execute arbitrary OS commands by injecting malicious input into the linters..optic-ci.original branch name field. The expectGitBranch() function in src/lint.ts passes the unsanitized branch name directly into child_process.exec() via an unescaped template literal, enabling arbitrary command execution when the lint command is run against the repository.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-75486
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 13:16 UTC · Revision 1
Source evidence
Synk Sweater Comb < 3.8.8 Command Injection via .vervet.yaml Branch Name
core-osv · Original sourcePublished 28 Aug 2026, 15:47 UTC
Synk Sweater Comb before 3.8.8 contains a command injection vulnerability that allows an attacker who controls the .vervet.yaml configuration file to execute arbitrary OS commands by injecting malicious input into the linters..optic-ci.original branch name field. The expectGitBranch() function in src/lint.ts passes the unsanitized branch name directly into child_process.exec() via an unescaped template literal, enabling arbitrary command execution when the lint command is run against the repository.
osv:CVE-2026-75486
Complete source record
{
"id": "727e01fdb96627e693de1a32aa544b9cefd94283572163ed81b18dbc2b1990c6",
"url": "https://osv.dev/vulnerability/CVE-2026-75486",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Synk Sweater Comb < 3.8.8 Command Injection via .vervet.yaml Branch Name",
"summary": "Synk Sweater Comb before 3.8.8 contains a command injection vulnerability that allows an attacker who controls the .vervet.yaml configuration file to execute arbitrary OS commands by injecting malicious input into the linters..optic-ci.original branch name field. The expectGitBranch() function in src/lint.ts passes the unsanitized branch name directly into child_process.exec() via an unescaped template literal, enabling arbitrary command execution when the lint command is run against the repository.",
"evidence": "osv:CVE-2026-75486",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-75486",
"aliases": [
"CVE-2026-75486"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/snyk/sweater-comb",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "908af800b2adb2ff90b5a0b938514b0f830f702a"
},
{
"fixed": "05a0eec4f2acb9ce6d4814016b475504fc64eab2"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "3.8.8"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "908af800b2adb2ff90b5a0b938514b0f830f702a"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v3.8.8"
},
{
"range": [
{
"fixed": "05a0eec4f2acb9ce6d4814016b475504fc64eab2"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
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"v3.8.6",
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-75486.json"
}
}
],
"modified": "2026-10-28T02:30:28.814837167Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75486.json",
"https://github.com/snyk/sweater-comb/releases/tag/v3.8.8",
"https://nvd.nist.gov/vuln/detail/CVE-2026-75486",
"https://www.vulncheck.com/advisories/synk-sweater-comb-command-injection-via-vervet-yaml-branch-name",
"https://github.com/snyk/sweater-comb/commit/05a0eec4f2acb9ce6d4814016b475504fc64eab2",
"https://github.com/snyk/sweater-comb/pull/743",
"https://github.com/snyk/sweater-comb"
],
"provider_metadata": {
"cwe_ids": [
"CWE-78"
],
"cna_assigner": "VulnCheck",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/75xxx/CVE-2026-75486.json"
}
},
"related_cves": [
{
"value": "CVE-2026-75486",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 495767,
"published_at": "2026-08-28T15:47:21.519+00:00"
}