CVE-2022-41717

Excessive memory growth in net/http and golang.org/x/net/http2

MEDIUM
5.3
CVSS Score
Published: December 8, 2022 at 07:03 PM UTC
Updated: June 17, 2026 at 05:03 AM UTC
5 products affected across 4 vendorsFedoraGoHTTP2

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Severity
MEDIUM5.3
Exploit prediction
EPSS 6%

Description

An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.18.91.19.0 ≤ v < 1.19.4
Affected range stops below 1.18.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.19.4, so it looks safe — our inference, not a vendor statement
v < 0.4.0
Affected range stops below 0.4.0, so it looks safe — our inference, not a vendor statement
v < 1.18.91.19.0-0 ≤ v < 1.19.41.19.0-0
Affected range stops below 1.18.9, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.19.4, so it looks safe — our inference, not a vendor statement
v < 0.4.0
Affected range stops below 0.4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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