CVE-2026-27141

Sending certain HTTP/2 frames can cause a server to panic in golang.org/x/net

State: Published
Severity: 7.5 High
Published: Feb 26, 2026
Updated: Feb 27, 2026
Reserved: Feb 17, 2026

Description

Due to missing nil check, sending 0x0a-0x0f HTTP/2 frames will cause a running server to panic

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-476 NULL Pointer Dereference

Affected Products

Product	Versions
golang.org/x/net/http2golang.org/x/net	0.50.0 to before 0.51.0Affected

References

https://nvd.nist.gov/vuln/detail/CVE-2026-27141
https://go.dev/cl/746180
https://go.dev/issue/77652
https://pkg.go.dev/vuln/GO-2026-4559

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