x-net-html up to 0.44.x on Go html.Parse resource consumption

Summaryinfo

A vulnerability, which was classified as problematic, has been found in x-net-html up to 0.44.x on Go. This affects the function html.Parse. The manipulation leads to resource consumption. This vulnerability is referenced as CVE-2025-47911. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in x-net-html up to 0.44.x on Go. It has been rated as problematic. This issue affects the function html.Parse. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.

The identification of this vulnerability is CVE-2025-47911 since 05/14/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 298274 (Linux Distros Unpatched Vulnerability : CVE-2025-47911), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.45.0 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (298274) and CERT Bund (WID-SEC-2026-1618). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

• Splunk Splunk Enterprise

Productinfo

Name

• x-net-html

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

CPE 2.3info

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CPE 2.2info

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Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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