Allocation of Resources Without Limits or Throttling Affecting std/net/http package, versions <1.21.9>=1.22.0-0 <1.22.2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-STDNETHTTP-14565071
- published6 Jan 2026
- disclosed3 Apr 2024
- creditBartek Nowotarski
Introduced: 3 Apr 2024
CVE-2023-45288 (opens in a new tab)How to fix?
Upgrade std/net/http to version 1.21.9, 1.22.2 or higher.
Overview
std/net/http is a Go standard library package std/net/http
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling.
Go Vulnerability Report:
An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames.Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed.This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send.The fix sets a limit on the amount of excess header frames we will process before closing a connection.