# CVE-2026-97032: Go net/http HTTP/2 server crash due to HPACK encoder race

Source: https://junglewise.ai/threats/cve-2026-97032-go-2026-6617-http-2-server-crash-due-to-hpack-encoder-race-in-net  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-08. Updated: 2026-10-10  
License: CC BY 4.0 with a link back

CVE-2026-97032 · Severity: high · CVSS 7.5 · Published 2026-10-08

Go's net/http library provides HTTP/2 server functionality for web services. A race condition in the HPACK header compression encoder can cause an HTTP/2 server to crash, resulting in denial of service for applications relying on this library.

Technologies: [go (Go)](https://junglewise.ai/threats/technologies/go). Vendors: [Go](https://junglewise.ai/threats/vendors/go).

## Quick answers

**Is CVE-2026-97032 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-97032 being exploited in the wild.

**How severe is CVE-2026-97032?** High severity, with a CVSS score of 7.5, published 8 October 2026.

**Which products and versions are affected?** go (Go) <UNKNOWN>.

**Is there a fix for CVE-2026-97032?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-97032 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-97032?** Check whether you run go (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.

## Technical details

A race condition exists in the HPACK encoder used by HTTP/2 servers in Go's net/http package. An attacker can trigger concurrent encoding operations to cause a crash, resulting in denial of service. The vulnerability requires network access to an HTTP/2 server and no authentication.

## Affected products

- Go Go <UNKNOWN>

## Identifiers

- CVE-2026-97032
- GO-2026-6617

## References

- [https://go.dev/cl/847188](https://go.dev/cl/847188)
- [https://go.dev/cl/847313](https://go.dev/cl/847313)

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