CVE-2026-27203: Insecure Env File Update

Constructing environment or configuration file contents using naive string concatenation or interpolation allows injection vulnerabilities. If the variables contain unescaped characters like newlines or quotes, an attacker can inject arbitrary key-value pairs, leading to application misconfiguration, Denial of Service, or Remote Code Execution. Use a secure

Provally CuratedPublic repositoryHighMedium confidenceVerifiedApache-2.0typescript
greprules fetch cve-2026-27203-insecure-env-file-update --engine opengrep

Description

Constructing environment or configuration file contents using naive string concatenation or interpolation allows injection vulnerabilities. If the variables contain unescaped characters like newlines or quotes, an attacker can inject arbitrary key-value pairs, leading to application misconfiguration, Denial of Service, or Remote Code Execution. Use a secure

Detection target

Not provided

Recommended fix

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False-positive notes

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