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TI-2026-52870 Aliases CVE-2026-75486GHSA-rcgj-xg9w-8x5p

Synk Sweater Comb < 3.8.8 Command Injection via .vervet.yaml Branch Name

Priority HIGH 72CWE-78Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

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.<key>.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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02315 83rd percentileScored 2026-11-07
Fix Fixed sweater-comb (snyk): 3.8.8

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Snyksweater-combbefore 3.8.83.8.8Patch availableCNA
  • sweater-comb VendorSnyk Affected before 3.8.8 Fixed in 3.8.8 Patch available CNA

Remediation

  • Fix · CNA sweater-comb (snyk) Fixed in 3.8.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-75486
  2. 2026-10-03 Alias added: GHSA-rcgj-xg9w-8x5p

References

Patch 2

Other 1

  • TI-2022-07159 Command injection in snyk CVSS 3.1MEDIUM 6.3
  • TI-2023-01660 Cross-site scripting in Snyk Advisor CVSS 3.1MEDIUM 5.4
  • TI-2019-08025 Code injection in Snyk safer-eval CVSS 3.1CRITICAL 9.9
  • TI-2019-08009 Prototype pollution in Snyk lodash CVSS 3.1CRITICAL 9.1
  • TI-2019-08056 OS command injection in Snyk promise-probe CVSS 3.1CRITICAL 9.8
  • TI-2019-08024 Code injection in Snyk safer-eval CVSS 3.1CRITICAL 9.9
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences