CVE-2026-27141: GO-2026-4559 - Sending certain HTTP/2 frames can cause a server to panic in golang.org/x/net

CVE-2026-27141 · Severity: info · Published 2026-02-26

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

Technologies: golang.org/x/net (Go). Vendors: Go.

Quick answers

Is CVE-2026-27141 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-27141 being exploited in the wild.
How severe is CVE-2026-27141?
Informational severity, published 26 February 2026.
Which products and versions are affected?
golang.org/x/net (Go) SEMVER:introduced=0.50.0,fixed=0.51.0.
Is there a fix for CVE-2026-27141?
Yes. golang.org/x/net (Go): upgrade to 0.51.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-27141?
Check whether you run golang.org/x/net (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • golang.org/x/net (Go): upgrade to 0.51.0 or later
    go get golang.org/x/net@v0.51.0

Affected products

  • golang.org/x/net (Go) SEMVER:introduced=0.50.0,fixed=0.51.0

Identifiers

  • CVE-2026-27141
  • GO-2026-4559

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