CVE-2026-27141

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

HIGH

7.5

CVSS Score

Published: February 26, 2026 at 06:50 PM UTC

Updated: June 17, 2026 at 10:26 AM UTC

1 product affected across 1 vendorHTTP2

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Severity

HIGH7.5

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

HTTP2 · Golang Org X .NETgo

60%

0.50.0 ≤ v < 0.51.00.50.0

Affected range stops below 0.51.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

Source: cverecord

https://nvd.nist.gov/vuln/detail/CVE-2026-27141

Source: cverecord

https://go.dev/cl/746180

Source: cverecord

https://go.dev/issue/77652

Source: cverecord

https://pkg.go.dev/vuln/GO-2026-4559

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-476

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