CVE & CISA-KEV Catalog

CVE-2026-33814

HIGH
7.5
CVSS v3
NVD

Description

When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.

How to fix

Remediation Available
golang-golang-x-netDebian
Fixed in:1:0.53.0-1CVE-2026-33814
golang.org/x/netGo
Fixed in:0.53.0GO-2026-4918
stdlibGo
Fixed in:1.26.3GO-2026-4918
go-toolsetRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
go-toolsetRocky
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golangRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golangRocky
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golang-binRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
golang-binRocky
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
golang-docsRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golang-docsRocky
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
golang-miscRocky
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golang-miscRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
golang-raceRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
golang-raceRocky
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golang-srcRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golang-srcRocky
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golang-testsRocky
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
golang-testsRed Hat / RHEL
Fixed in:0:1.26.5-1.el9_2RHSA-2026:61253
Fixed in:0:1.26.5-1.el9_4RHSA-2026:57649
haproxyRed Hat / RHEL
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
haproxyRocky
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
haproxy-debugsourceRed Hat / RHEL
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
haproxy-debugsourceRocky
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
haproxy28Rocky
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
haproxy28Red Hat / RHEL
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
haproxy28-debuginfoRocky
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
haproxy28-debuginfoRed Hat / RHEL
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
Fixed in:0:2.8.10-3.rhaos4.21.el9RHSA-2026:66350
kernelRed Hat / RHEL
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
kernelRocky
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091
kernel-64kRocky
Fixed in:0:5.14.0-687.44.1.el9_8RHSA-2026:63091

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

0.78%probability of exploitation in 30 days
54thpercentile

Moderate risk: more likely to be exploited than 54% of all known CVEs.

References

Related Vulnerabilities

Other CWE-835 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-13935High7.587%-Fix
CVE-2020-36227High7.578%-Fix
CVE-2022-0778High7.573%-Fix
CVE-2024-20353High8.671%KEV-
CVE-2019-14241High7.570%--
CVE-2017-16944High7.563%-Fix

Common questions

How do I fix CVE-2026-33814?

Published advisories record a fix for 493 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-33814 being actively exploited?

Not that we know of. CVE-2026-33814 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.78% is the estimated probability that it will be exploited in the next 30 days. That is higher than 54% of all scored CVEs.

How severe is CVE-2026-33814?

CVE-2026-33814 has a CVSS v3 base score of 7.5, rated important. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-33814 affect?

Published advisories record a fix for golang-golang-x-net (Debian), golang.org/x/net (Go), stdlib (Go), go-toolset (Red Hat / RHEL), and 489 more. The list on this page is capped, so there may be more.

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CVE-2026-33814 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-18.