Public proof of conceptFix available

CVE-2022-41717

Q: Is CVE-2022-41717 actively exploited?

Active exploitation of CVE-2022-41717 has not been confirmed. Its EPSS score was 6.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-41717?

CVE-2022-41717 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

A public proof of concept exists; no exploitation attested.

Published2022-12-08
Fixed in1.19.4 · 1.18.9
WeaknessCWE-770

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2022-12-0820:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-41717?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-41717?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Branch	Affected	Fixed in	Source
1.19	≥ 1.19.0, < 1.19.4	1.19.4	NVD · OSV
1.19	≥ 1.19.0-0, < 1.19.4	1.19.4	OSV
1.18	< 1.18.9	1.18.9	NVD · OSV

Fedoraproject fedora

Branch	Affected	Fixed in	Source
37.x	= 37	no fix published	NVD
38.x	= 38	no fix published	NVD

Golang http2

Branch	Affected	Fixed in	Source
0.4	< 0.4.0	0.4.0	NVD · OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

aardvark-dnsAlmaLinux:8all versions · fixed in 2:1.5.0-2.module_el8.8.0+3470+252b1910
buildahAlmaLinux:9all versions · fixed in 1:1.29.1-1.el9and 1 other package
buildahAlmaLinux:8all versions · fixed in 1:1.24.6-5.module_el8.8.0+3468+16b86c82and 1 other package
buildahAlmaLinux:8all versions · fixed in 1:1.29.1-1.module_el8.8.0+3470+252b1910and 1 other package
cockpit-podmanAlmaLinux:8all versions · fixed in 46-1.module_el8.7.0+3344+5bcd850f
cockpit-podmanAlmaLinux:8all versions · fixed in 63.1-1.module_el8.8.0+3557+7ba9cc13
conmonAlmaLinux:9all versions · fixed in 2:2.1.7-1.el9_2
conmonAlmaLinux:8all versions · fixed in 2:2.1.4-1.module_el8.7.0+3344+5bcd850f

47 more package ranges on OSV.dev

Vendor advisories

RHSA-2024:0746 Red Hat Product Security3 products fixed
Red Hat Security Advisory: new container image: rhceph-5.3
RHSA-2023:6818 Red Hat Product Security2 products fixed
Red Hat Security Advisory: Satellite 6.14 security and bug fix update
RHSA-2023:5982 Red Hat Product Security13 products fixed
Red Hat Security Advisory: Red Hat Satellite Client security and bug fix update
RHBA-2023:4275 Red Hat Product Security10 products fixed
Red Hat Bug Fix Advisory: Red Hat Quay v3.8.11 bug fix release
RHSA-2023:4470 Red Hat Product Security2 products fixed
Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.3 Product Security and Bug Fix Update
RHSA-2023:4091 Red Hat Product Security4 products fixed
Red Hat Security Advisory: OpenShift Container Platform 4.13.5 security update

19 more advisories

Full record on NVD

Fix

Update Go to 1.19.4 · 1.18.9
Vendor fix Red Hat Product Security RHSA-2024:0746 · 3 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2789521 and https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/5/html-single/up…
Vendor fix Red Hat Product Security RHSA-2023:6818 · 2 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For detailed instructions how to apply this update, refer to: https://access.redhat.com/documentation/en-us/red_hat_satellite/6.14/html/upgrading_red_hat_satellite_to_6.14/index
Vendor fix Red Hat Product Security RHSA-2023:5982 · 19 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Vendor fix Red Hat Product Security RHBA-2023:4275 · 10 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258
Vendor fix Red Hat Product Security RHSA-2023:4091 · 4 productsFor OpenShift Container Platform 4.13 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.13/release_notes/ocp-4-12…
Vendor fix Red Hat Product Security RHSA-2023:4090 · 8 productsFor OpenShift Container Platform 4.13 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.13/release_notes/ocp-4-1…

Advisories and patches

go.devPatch · Vendor Advisory
go.devPatch · Vendor Advisory
go.devPatch
groups.google.comRelease Notes
pkg.go.devVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifieddomdom82/h2conn-exploit

Sources

NVDCVSS 3.15.3read 2026-10-23
NVDweakness (CWE)CWE-770read 2026-10-23
FIRST EPSSEPSS score6.1 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Published: 2022-12-08
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-41717?

Is CVE-2022-41717 actively exploited?

Active exploitation of CVE-2022-41717 has not been confirmed. Its EPSS score was 6.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-41717?

CVE-2022-41717 has a CVSS v3 base score of 5.3 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

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