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CVE-2022-41721

UNKNOWN
Published 2023-01-13T22:46:22.064Z
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Expert Analysis

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CVSS Score

V3.1
7.5
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.231
Higher than 23.1% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

golang.org/x/net

golang.org/x/net/http2/h2c

Affected Versions:

0.0.0-20220524220425-1d687d428aca

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

golang.org/x/net/http2/h2c vulnerable to request smuggling attack

GHSA-fxg5-wq6x-vr4w

Advisory Details

A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests. ### Specific Go Packages Affected golang.org/x/net/http2/h2c

Affected Packages

Go golang.org/x/net
ECOSYSTEM: ≥0.0.0-20220524220425-1d687d428aca <0.1.1-0.20221104162952-702349b0e862

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2022-41721
PACKAGE https://cs.opensource.google/go/x/net
WEB https://go.dev/cl/447396
WEB https://go.dev/issue/56352
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/X3H3EWQXM2XL5AGBX6UL443JEJ3GQXJN
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/X5DXTLLWN6HKI5I35EUZRBISTNZJ75GP
WEB https://pkg.go.dev/vuln/GO-2023-1495

Advisory provided by GitHub Security Advisory Database. Published: January 14, 2023, Modified: April 4, 2025

References

https://go.dev/issue/56352
https://go.dev/cl/447396
https://pkg.go.dev/vuln/GO-2023-1495
https://lists.fedoraproject.org/archives/list/[email protected]/message/X3H3EWQXM2XL5AGBX6UL443JEJ3GQXJN/
https://lists.fedoraproject.org/archives/list/[email protected]/message/X5DXTLLWN6HKI5I35EUZRBISTNZJ75GP/
Published: 2023-01-13T22:46:22.064Z
Last Modified: 2025-04-04T14:46:17.808Z
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