What is CVE-2025-58190?

CVE-2025-58190 is a medium-severity vulnerability in Go HTML, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.3/10. Published 2026-02-05.

How severe is CVE-2025-58190?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Go HTML

CVE-2025-58190

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.

Published 2026-02-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.005 (41.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Go HTML
Golang.org/x/net Golang.org/x/net/html — versions 0

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

groups.google.com/g/golang-announce/c/jnQcOYpiR2c (Mailing List, Third Party Advisory)
github.com/golang/vulndb/issues/4441 (Exploit, Issue Tracking)
go.dev/cl/709875 (Patch)
pkg.go.dev/vuln/GO-2026-4441 (Vendor Advisory)

Frequently asked questions

What is CVE-2025-58190?: CVE-2025-58190 is a medium-severity vulnerability in Go HTML, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.3/10. Published 2026-02-05.
How severe is CVE-2025-58190?: Medium severity. CVSS v3 base score is 5.3 out of 10.