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CVE-2025-47911

Good to know:

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Date: February 5, 2026

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.

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2025-47911
https://pkg.go.dev/vuln/GO-2026-4440
https://github.com/golang/vulndb/issues/4440
https://groups.google.com/g/golang-announce/c/jnQcOYpiR2c
https://go.dev/cl/709876
https://go.googlesource.com/net
https://www.mend.io/vulnerability-database/CVE-2025-47911

Severity Score

Weakness Type (CWE)

Inefficient Algorithmic Complexity

CWE-407

Top Fix

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Upgrade to version github.com/golang/net - v0.45.0;golang.org/x/net - v0.45.0;https://github.com/golang/net.git - v0.45.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

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