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CVE-2015-5741

CRITICAL severity · CVSS 9.8 · CWE-444
9.8CVSS CRITICAL

Summary

The net/http library in net/http/transfer.go in Go before 1.4.3 does not properly parse HTTP headers, which allows remote attackers to conduct HTTP request smuggling attacks via a request that contains Content-Length and Transfer-Encoding header fields.

Impact & exploitability

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)2%

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

Affected products we track (2)

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Official patch: http://lists.fedoraproject.org/pipermail/package-announce/2015-October/167997.html ↗

Last checked: Wed, 10 Jun 2026 22:18:30 UTC