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Noroxi
NVD / CVE Program· CNA Go

CVE-2022-41717: Excessive memory growth in net/http and golang.org/x/net/http2

Noroxi assessment

Priority: Monitor (action score 23/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 6% (FIRST EPSS); higher than 93.3% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Go standard library net/http 1.18.9, 1.19.4; golang.org/x/net golang.org/x/net/http2 0.4.0; Azure Linux 3.0 ARM 2.45.4-1, 25.0.3-1, 3.7.0-1.
  • Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to Go standard library net/http 1.18.9, 1.19.4; golang.org/x/net golang.org/x/net/http2 0.4.0; Azure Linux 3.0 ARM 2.45.4-1, 25.0.3-1, 3.7.0-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

MediumCVSS 5.3 · v3.1—Proof of concept Fix available
Published
Dec 8, 2022
Updated
Jun 17, 2026
EPSS
6.0% · 93th percentile

Report tools

JSON

Action score

23

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 6.0%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-41717

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
golanggo
golanghttp2
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora37
  • fedoraproject fedora38
  • golang gobefore 1.18.9
  • golang go1.19.0 and later · before 1.19.4
  • golang http2before 0.4.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Go). Independent of NVD's CPE analysis and usually ahead of it.

  • Go standard library net/http

    • before 1.18.9affected · semver
    • 1.19.0-0 and later · before 1.19.4affected · semver

  • golang.org/x/net golang.org/x/net/http2

    • before 0.4.0affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8aardvark-dnsbefore 2:1.5.0-2.module_el8.8.0+3470+252b19102:1.5.0-2.module_el8.8.0+3470+252b1910
AlmaLinux:8aardvark-dnsbefore 2:1.0.1-37.module_el8.8.0+3468+16b86c822:1.0.1-37.module_el8.8.0+3468+16b86c82
AlmaLinux:8buildahbefore 1:1.29.1-1.module_el8.8.0+3470+252b19101:1.29.1-1.module_el8.8.0+3470+252b1910
AlmaLinux:8buildahbefore 1:1.24.6-5.module_el8.8.0+3468+16b86c821:1.24.6-5.module_el8.8.0+3468+16b86c82
AlmaLinux:8buildah-testsbefore 1:1.24.6-5.module_el8.8.0+3468+16b86c821:1.24.6-5.module_el8.8.0+3468+16b86c82
AlmaLinux:8buildah-testsbefore 1:1.29.1-1.module_el8.8.0+3470+252b19101:1.29.1-1.module_el8.8.0+3470+252b1910
AlmaLinux:8cockpit-podmanbefore 46-1.module_el8.7.0+3344+5bcd850f46-1.module_el8.7.0+3344+5bcd850f
AlmaLinux:8cockpit-podmanbefore 63.1-1.module_el8.8.0+3557+7ba9cc1363.1-1.module_el8.8.0+3557+7ba9cc13
AlmaLinux:8conmonbefore 3:2.1.6-1.module_el8.8.0+3470+252b19103:2.1.6-1.module_el8.8.0+3470+252b1910
AlmaLinux:8conmonbefore 2:2.1.4-1.module_el8.7.0+3344+5bcd850f2:2.1.4-1.module_el8.7.0+3344+5bcd850f
AlmaLinux:8container-selinuxbefore 2:2.199.0-1.module_el8.8.0+3468+16b86c822:2.199.0-1.module_el8.8.0+3468+16b86c82
AlmaLinux:8container-selinuxbefore 2:2.205.0-2.module_el8.8.0+3557+7ba9cc132:2.205.0-2.module_el8.8.0+3557+7ba9cc13
AlmaLinux:8containernetworking-pluginsbefore 1:1.2.0-1.module_el8.8.0+3470+252b19101:1.2.0-1.module_el8.8.0+3470+252b1910
AlmaLinux:8containernetworking-pluginsbefore 1:1.1.1-2.module_el8.7.0+3344+5bcd850f1:1.1.1-2.module_el8.7.0+3344+5bcd850f
AlmaLinux:8containers-commonbefore 2:1-37.module_el8.8.0+3468+16b86c822:1-37.module_el8.8.0+3468+16b86c82
AlmaLinux:8containers-commonbefore 2:1-63.module_el8.8.0+3568+e85782842:1-63.module_el8.8.0+3568+e8578284
AlmaLinux:8critbefore 3.15-3.module_el8.6.0+2877+8e437bf53.15-3.module_el8.6.0+2877+8e437bf5
AlmaLinux:8critbefore 3.15-3.module_el8.6.0+3137+d33c3efb3.15-3.module_el8.6.0+3137+d33c3efb
AlmaLinux:8critbefore 3.15-3.module_el8.7.0+3407+95aa0ca93.15-3.module_el8.7.0+3407+95aa0ca9
AlmaLinux:8criubefore 3.15-3.module_el8.6.0+3137+d33c3efb3.15-3.module_el8.6.0+3137+d33c3efb
AlmaLinux:8criubefore 3.15-3.module_el8.7.0+3407+95aa0ca93.15-3.module_el8.7.0+3407+95aa0ca9
AlmaLinux:8criubefore 3.15-3.module_el8.6.0+2877+8e437bf53.15-3.module_el8.6.0+2877+8e437bf5
AlmaLinux:8criu-develbefore 3.15-3.module_el8.6.0+3137+d33c3efb3.15-3.module_el8.6.0+3137+d33c3efb
AlmaLinux:8criu-develbefore 3.15-3.module_el8.6.0+2877+8e437bf53.15-3.module_el8.6.0+2877+8e437bf5

+96

Same product

golang: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-7187The "go get" implementation in Go 1.9.4, when the -insecure command-line option is used, does not validate the import path (get/vcs.go only
    54Plan
  • CVE-2018-16873In Go before 1.10.6 and 1.11.x before 1.11.3, the "go get" command is vulnerable to remote code execution when executed with the -u flag and
    52Plan
  • CVE-2021-38297Go before 1.16.9 and 1.17.x before 1.17.2 has a Buffer Overflow via large arguments in a function invocation from a WASM module, when GOARCH
    42Plan

Published before and after this one in the same product

  • ← EarlierCVE-2022-41716Nov 2, 2022 · Unsanitized NUL in environment variables on Windows in syscall and os/exec
    30Monitor
  • ← EarlierCVE-2022-41720Dec 7, 2022 · Restricted file access on Windows in os and net/http
    30Monitor
  • Later →CVE-2022-41722Feb 28, 2023 · Path traversal on Windows in path/filepath
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Go standard library net/http1.18.9Vendor (CNA)
Go standard library net/http1.19.4Vendor (CNA)
golang.org/x/net golang.org/x/net/http20.4.0Vendor (CNA)
Azure Linux 3.0 ARM2.45.4-1 · prometheusMicrosoft (MSRC)
Azure Linux 3.0 ARM25.0.3-1 · moby-engineMicrosoft (MSRC)
Azure Linux 3.0 ARM3.7.0-1 · sriov-network-device-pluginMicrosoft (MSRC)
Azure Linux 3.0 x642.45.4-1 · prometheusMicrosoft (MSRC)
Azure Linux 3.0 x6425.0.3-1 · moby-engineMicrosoft (MSRC)
Azure Linux 3.0 x643.7.0-1 · sriov-network-device-pluginMicrosoft (MSRC)
CBL Mariner 1.0 ARM1.18.8-2 · golangMicrosoft (MSRC)
CBL Mariner 1.0 x641.18.8-2 · golangMicrosoft (MSRC)
CBL Mariner 2.0 ARM1.18.8-2 · golangMicrosoft (MSRC)
CBL Mariner 2.0 ARM1.22.3-1 · cri-oMicrosoft (MSRC)
CBL Mariner 2.0 ARM1.55.0-20 · containerized-data-importerMicrosoft (MSRC)
CBL Mariner 2.0 ARM10.24.0-1 · azcopyMicrosoft (MSRC)
CBL Mariner 2.0 x641.18.8-2 · golangMicrosoft (MSRC)
CBL Mariner 2.0 x641.22.3-1 · cri-oMicrosoft (MSRC)
CBL Mariner 2.0 x641.55.0-20 · containerized-data-importerMicrosoft (MSRC)
CBL Mariner 2.0 x6410.24.0-1 · azcopyMicrosoft (MSRC)
almalinux:buildah1:1.29.1-1.el9 · AlmaLinux:9Package registry (OSV)
almalinux:buildah-tests1:1.29.1-1.el9 · AlmaLinux:9Package registry (OSV)
almalinux:conmon2:2.1.7-1.el9_2 · AlmaLinux:9Package registry (OSV)
almalinux:osbuild-composer76-2.el9_2.alma · AlmaLinux:9Package registry (OSV)
almalinux:osbuild-composer-core76-2.el9_2.alma · AlmaLinux:9Package registry (OSV)
almalinux:osbuild-composer-dnf-json76-2.el9_2.alma · AlmaLinux:9Package registry (OSV)
almalinux:osbuild-composer-worker76-2.el9_2.alma · AlmaLinux:9Package registry (OSV)
almalinux:podman2:4.4.1-3.el9 · AlmaLinux:9Package registry (OSV)
almalinux:podman-docker2:4.4.1-3.el9 · AlmaLinux:9Package registry (OSV)
almalinux:toolbox0.0.99.3-9.el9 · AlmaLinux:9Package registry (OSV)
almalinux:toolbox-tests0.0.99.3-9.el9 · AlmaLinux:9Package registry (OSV)

+30

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:02022-12-13

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+4 d
  3. TodayOct 26, 2026+1418 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

National notice (Türkiye Cybersecurity Directorate / USOM)

Official security notices citing this record; remediation advice is on the agency's page.

All national notices →

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-770 · Allocation of Resources Without Limits or Throttling

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records