CVE-2026-97030 Recognize yield as regexp preceder keyword in html/template
A flaw in Go's html/template package fails to escape the 'yield' keyword, potentially allowing XSS attacks in templates.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-97030?
CVE-2026-97030 is a medium-severity cross-site scripting vulnerability in Go standard library html/template, published on 8 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A trusted template author may have previously written a valid template wherein the use of the 'yield' keyword would not be correctly escaped. We now ensure that valid keyword uses are escaped and non-keyword uses are not escaped.
Weakness: CWE-79
Which versions are affected by CVE-2026-97030?
2 open source packages ship an affected version, including golang and stdlib.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.26.9, 1.27.2 |
stdlib Go | All versions | 1.26.9, 1.27.2 |
How do I fix CVE-2026-97030?
Upgrade golang to a fixed version for your release line: 1.26.9 or 1.27.2.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-97030 being exploited?
There is no known exploitation of CVE-2026-97030 in the wild and no public exploit code.
Sources
Also known as AZL-108249, AZL-108299, AZL-108348, AZL-108441, AZL-108534, BELL-CVE-2026-97030 and 2206 more.