CVE-2022-2880Network attack vector

Backend request manipulation via unparsable query forwarding

Published Oct 14, 2022 · Updated Feb 13, 2025

Query parameter smuggling in Go net/http/httputil before 1.18.7 and 1.19.0 through 1.19.1 allows remote attackers to alter backend requests. ReverseProxy.ServeHTTP forwards the inbound raw query after net/http rejects unparsable parameters, preserving values omitted from the parsed Form. Exploitation requires a proxy Director that parses the outbound query; the discrepancy can bypass backend query validation and alter request handling.

CVSS severity7.5
High
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Query parameter smuggling in Go net/http/httputil before 1.18.7 and 1.19.0 through 1.19.1 allows remote attackers to alter backend requests. ReverseProxy.ServeHTTP forwards the inbound raw query after net/http rejects unparsable parameters, preserving values omitted from the parsed Form. Exploitation requires a proxy Director that parses the outbound query; the discrepancy can bypass backend query validation and alter request handling.

The record

CVE
CVE-2022-2880
Published
Oct 14, 2022
Updated
Feb 13, 2025
Vendor
Go
Product
net/http/httputil
Classifications
CWE-444, CAPEC-33, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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 <1.18.7
  2. Affected versionversion=1.19.0-0 <1.19.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go · net/http/httputilversion=0 <1.18.7; version=1.19.0-0 <1.19.2

Published CVSS scores

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

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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

CWE-444Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CAPEC-33HTTP Request Smuggling
T1190Exploit Public-Facing Application

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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