CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NCVE-2023-29406
Medium (6.5) in golang go. EPSS 1.5% chance of exploitation in the next 30 days. Fixed in stdlib 1.19.11, 1.20.6.
The HTTP/1 client does not fully validate the contents of the Host header. A maliciously crafted Host header can inject additional headers or entire requests. With fix, the HTTP/1 client now refuses to send requests containing an invalid Request.Host or Request.URL.Host value.
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
- CWE
- CWE-436
- Published
- Modified
- Record from
- the NVD, synced
Affected
- golang:go
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GO-2023-1878 | Go | stdlib | <1.19.11 >=1.20.0-0 <1.20.6 | 1.19.11, 1.20.6 |