http2-net-http up to 0.52.x on Go SETTINGS_MAX_FRAME_SIZE infinite loop

Summaryinfo

A vulnerability marked as problematic has been reported in http2-net-http up to 0.52.x on Go. This impacts an unknown function. Performing a manipulation of the argument SETTINGS_MAX_FRAME_SIZE results in infinite loop. This vulnerability was named CVE-2026-33814. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in http2-net-http up to 0.52.x on Go. This affects an unknown code. The manipulation of the argument SETTINGS_MAX_FRAME_SIZE with an unknown input leads to a infinite loop vulnerability. CWE is classifying the issue as CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. This is going to have an impact on availability. The summary by CVE is:

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.

This vulnerability is uniquely identified as CVE-2026-33814 since 03/23/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 315061 (SUSE SLED15 / SLES15 Security Update : go1.25 (SUSE-SU-2026:1862-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.53.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (315061) and CERT Bund (WID-SEC-2026-1437). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Splunk Splunk Enterprise
• Red Hat Enterprise Linux
• Google Container-Optimized OS
• Amazon Linux 2
• Ubuntu Linux
• SUSE Linux
• Oracle Linux
• SUSE openSUSE
• RESF Rocky Linux
• Microsoft Azure Linux
• Golang Go
• Red Hat OpenShift

Productinfo

Name

• http2-net-http

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35
• 0.36
• 0.37
• 0.38
• 0.39
• 0.40
• 0.41
• 0.42
• 0.43
• 0.44
• 0.45
• 0.46
• 0.47
• 0.48
• 0.49
• 0.50
• 0.51
• 0.52

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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