CVE-2025-22871

The net/http package improperly accepts a bare LF as a line terminator in chunked data chunk-size lines. This can permit request smuggling if a net/http server is used in conjunction with a server that incorrectly accepts a bare LF as part of a chunk-ext.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
GoCNA
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CVEADP
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CISA-ADPADP
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 3%
Debian logo
Debian Releases
Debian Product
Codename
golang-1.15
bullseye
vulnerable
bookworm
no-dsa
golang-1.19
bookworm
vulnerable
bullseye
postponed
golang-1.23
sid
1.23.8-1
fixed
bookworm
no-dsa
bullseye
postponed
golang-1.24
sid
1.24.2-2
fixed
trixie
1.24.2-2
fixed
bookworm
no-dsa
bullseye
postponed
Vulnerability Media Exposure
References
https://go.dev/cl/652998
https://go.dev/issue/71988
https://groups.google.com/g/golang-announce/c/Y2uBTVKjBQk
https://pkg.go.dev/vuln/GO-2025-3563
http://www.openwall.com/lists/oss-security/2025/04/04/4