# CVE-2026-97032 — Go standard library net/http

> As of 2026-10-08, CVE-2026-97032 is a vulnerability in Go standard library net/http, EPSS 0.1% (7.0th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-97032 as of 2026-10-08; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-10-08

## What is CVE-2026-97032?

HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies the HPACK encoder from two goroutines without synchronization: one uses the encoder to encode a HEADERS frame as part of a response sent to a client and the other modifies the encoder's table size when handling a SETTINGS frame containing SETTINGS_HEADER_TABLE_SIZE that a client sends. A malicious client can repeatedly send a request while changing the header table size to crash the server.

3 affected-product entries are recorded, across 2 vendors, listed below. The identifier was first published 2 days ago.

## Severity and exploitation probability

- **EPSS (FIRST):** 0.1% probability of exploitation in the next 30 days, higher than 7.0% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 0.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-10-08

## Is CVE-2026-97032 being exploited?

It currently carries a trending score of 31 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Go standard library](https://intel.threadlinqs.com/vendors/go-standard-library): net/http, net/http/internal/http2
- **golang.org/x/net**: golang.org/x/net/http2

## How to fix CVE-2026-97032

No vendor patch reference has been recorded for CVE-2026-97032 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-97032

No threat campaign in the Threadlinqs corpus currently references CVE-2026-97032, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-10-10. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [go.dev](https://go.dev/cl/847188)
- [go.dev (847313)](https://go.dev/cl/847313)
- [go.dev (81867)](https://go.dev/issue/81867)
- [groups.google.com](https://groups.google.com/g/golang-announce/c/U2fTuyDJznI)
- [groups.google.com (ZPwCyRUuGBs)](https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs)

_Showing 5 of 6 recorded references._

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-97032
Full detection coverage and IOCs for threats exploiting CVE-2026-97032 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp