CVE-2025-58190

Infinite parsing loop in golang.org/x/net

MEDIUM
5.3
CVSS Score
Published: February 5, 2026 at 05:48 PM UTC
Updated: June 17, 2026 at 09:44 AM UTC
2 products affected across 2 vendorsHtml.NET

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.45.0
v < 0.45.0
Affected range stops below 0.45.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (4)

Mailing ListThird Party Advisory
Source: cverecord
https://groups.google.com/g/golang-announce/c/jnQcOYpiR2c
ExploitIssue Tracking
Source: cverecord
https://github.com/golang/vulndb/issues/4441
Patch
Source: cverecord
https://go.dev/cl/709875
Vendor Advisory
Source: cverecord
https://pkg.go.dev/vuln/GO-2026-4441

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-835

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