XSS in Golang Go
CVE-2026-32289
Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (21.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Golang Go
- Go Standard Library Html/template — versions 0, 1.26.0-0
Weakness classification (CWE)
References
- security@golang.org (Patch)
- security@golang.org (Issue Tracking)
- security@golang.org (Mailing List, Release Notes)
- security@golang.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-32289?
- CVE-2026-32289 is a medium-severity vulnerability in Golang Go, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-04-08.
- How severe is CVE-2026-32289?
- Medium severity. CVSS v3 base score is 6.1 out of 10.