What is CVE-2026-25680?

CVE-2026-25680 is a medium-severity vulnerability in Golang Net, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-05-22.

How severe is CVE-2026-25680?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Golang Net

CVE-2026-25680

Parsing arbitrary HTML can consume excessive CPU time, possibly leading to denial of service.

Vulnerability class: DoS (Denial of Service)

Published 2026-05-22 · last modified 2026-07-23.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.4th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.001

Affected products

Golang Net
Golang.org/x/net Golang.org/x/net/html — versions 0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

go.dev/cl/781702 (Issue Tracking)
go.dev/issue/79573 (Issue Tracking)
groups.google.com/g/golang-announce/c/iI-mYSI0lu8 (Mailing List)
pkg.go.dev/vuln/GO-2026-5028 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-25680?: CVE-2026-25680 is a medium-severity vulnerability in Golang Net, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-05-22.
How severe is CVE-2026-25680?: Medium severity. CVSS v3 base score is 6.5 out of 10.