VulnerabilityAnalyzed
CVE-2026-42506
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree.
MEDIUM 6.1EPSS 0.24%
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
Description
Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- golang/net
- Source
- security@golang.org
References
- https://go.dev/cl/781700Issue Tracking
- https://go.dev/issue/79571Issue Tracking
- https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8Mailing List
- https://pkg.go.dev/vuln/GO-2026-5025Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.