CVE-2024-24791Network attack vector

Request interruption via reused incomplete connections

Published Jul 2, 2024 · Updated Oct 4, 2024

Denial of service in Go standard library net/http before 1.21.12 and 1.22.0 through 1.22.4 allows remote attackers to interrupt proxy requests. The HTTP/1.1 client's persistConn.readResponse path stops sending the request body after an early final response but leaves the connection reusable. Exposure requires httputil.ReverseProxy with a backend that returns a final response before reading an Expect: 100-continue body; each crafted request makes one later request fail.

CVSS severity7.5
High
EPSS probability1.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Go standard library net/http before 1.21.12 and 1.22.0 through 1.22.4 allows remote attackers to interrupt proxy requests. The HTTP/1.1 client's persistConn.readResponse path stops sending the request body after an early final response but leaves the connection reusable. Exposure requires httputil.ReverseProxy with a backend that returns a final response before reading an Expect: 100-continue body; each crafted request makes one later request fail.

The record

CVE
CVE-2024-24791
Published
Jul 2, 2024
Updated
Oct 4, 2024
Vendor
Go standard library
Product
net/http
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.21.12
  2. Affected versionversion=1.22.0-0 <1.22.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · net/httpversion=0 <1.21.12; version=1.22.0-0 <1.22.5

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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