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CVE-2022-1705
Improper sanitization of Transfer-Encoding headers in net/http
Medium6.5EPSS 1.5%
- Published
- Updated
- Reserved
- Assigned by
- Go
Description
Acceptance of some invalid Transfer-Encoding headers in the HTTP/1 client in net/http before Go 1.17.12 and Go 1.18.4 allows HTTP request smuggling if combined with an intermediate server that also improperly fails to reject the header as invalid.
Timeline
ID reserved
By Go
- 3 months later
· 3 months later
Published
- 4 years later
· 4 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| NVDNVD · Modified | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 1.5% · top 25% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
- CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
- CWE-444 (opens in a new tab)All about CWE-444 and its CVEs
Affected products
Go standard library · net/http
- affected < 1.17.12
- affected 1.18.0-0 – < 1.18.4
References (6)
- https://go.dev/cl/409874 (opens in a new tab)x_transferred
- https://go.googlesource.com/go/+/e5017a93fcde94f09836200bca55324af037ee5f (opens in a new tab)x_transferred
- https://go.dev/issue/53188 (opens in a new tab)x_transferred
- https://go.dev/cl/410714 (opens in a new tab)x_transferred
- https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE (opens in a new tab)x_transferred
- https://pkg.go.dev/vuln/GO-2022-0525 (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2022-1705)Record last updated .