Vulnerability · Published Feb 5, 2026 · Assigned by Go
CVE-2025-58190Infinite parsing loop in golang.org/x/net
Medium 5.3
In plain English
A medium-severity security flaw in golang.org/x/net/html from golang.org/x/net. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 54.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | golang-golang-x-net | no fix listed | DEBIAN-CVE-2025-58190 |
| Debian:13 | golang-golang-x-net | no fix listed | DEBIAN-CVE-2025-58190 |
| Debian:14 | golang-golang-x-net | 1:0.47.0-1 | DEBIAN-CVE-2025-58190 |
| Go | golang.org/x/net | 0.45.0 | GO-2026-4441 |
| Ubuntu:22.04:LTS | golang-golang-x-net | 1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1 | USN-8900-1 |
| Ubuntu:22.04:LTS | golang-golang-x-net | 1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1 | UBUNTU-CVE-2025-58190 |
| Ubuntu:25.10 | golang-golang-x-net | no fix listed | UBUNTU-CVE-2025-58190 |
| Ubuntu:26.04:LTS | golang-golang-x-net | no fix listed | UBUNTU-CVE-2025-58190 |
| Ubuntu:26.10 | golang-golang-x-net | no fix listed | UBUNTU-CVE-2025-58190 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| golang.org/x/net | golang.org/x/net/html | 0 – before 0.45.0 |