High7.5Red Hat & Ubuntu Linux
SMTP Command Injection and Header Injection via MailAddress parsing flaw
CVE-2026-32178 Published Apr 14, 2026
CVE-2026-32178
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
SMTP Command Injection and Header Injection via MailAddress parsing flaw. Red Hat rates this important (CVSS 7.5). Weakness: CWE-138. Affected package(s): dotnet8.0, dotnet10.0, dotnet8, dotnet9.0, dotnet9, dotnet10. Resolved in Red Hat advisory RHSA-2026:9080 — update the affected packages (`sudo dnf update`).
Affected versions
- dotnet8.0-0:8.0.126-1.el9_7
- dotnet8.0-0:8.0.126-1.el9_6
- dotnet8.0-0:8.0.126-1.el9_4
- dotnet10.0-0:10.0.106-1.el9_7
- dotnet8.0-0:8.0.126-1.el8_10
- dotnet8-0-main-8.0.126-1.hum1
- dotnet10.0-0:10.0.106-1.el10_1
- dotnet9.0-0:9.0.116-1.el9_7
- dotnet9.0-0:9.0.116-1.el9_6
- dotnet9-0-main-9.0.116-1.hum1
- dotnet8.0-0:8.0.126-1.el10_1
- dotnet8.0-0:8.0.126-1.el10_0
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Fixed versions
- RHSA-2026:9080
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:9080 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
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