CVE-2021-31402

7.5 highEPSS 1.2%

High (7.5) in flutterchina dio. EPSS 1.2% chance of exploitation in the next 30 days.

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.

Severity

7.5 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 1.2% chance of exploitation in the next 30 days; higher than 67% of CVEs (scores of 2026-10-31)
CWE: CWE-74
Published: 2021-04-15
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19