EUVD-2026-27424

fkie_cve-2021-31402

The dio package 4.0.0 for Dart allows CRLF injection if the attacker controls the HTTP method string, a different vulnerability than CVE-2020-35669.

GHSA-9324-jv53-9cc8 — dio vulnerable to CRLF injection with HTTP method string

Affected: Pub: dio

### Impact The dio package 4.0.0 for Dart allows CRLF injection if the attacker controls the HTTP method string, a different vulnerability than CVE-2020-35669.

### Patches The vulnerability has been resolved by https://github.com/cfug/dio/commit/927f79e93ba39f3c3a12c190624a55653d577984, and included since v5.0.0.

### Workarounds Cherry-pick the commit to your own fork can resolves the vulberability too.

### References - https://nvd.nist.gov/vuln/detail/CVE-2021-31402 - https://osv.dev/GHSA-jwpw-q68h-r678 - https://github.com/cfug/dio/issues/1130 - https://github.com/cfug/dio/issues/1752

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EUVD-2026-27424

fkie_cve-2021-31402

GHSA-9324-jv53-9cc8 — dio vulnerable to CRLF injection with HTTP method string

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