CVE-2026-39826
Medium
Description
If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.
SeverityMedium
CVSS6.1
Exploit probability—
ProductGo
PublishedMay 7, 2026
First seenMay 7, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- golang go1.25.10, 1.26.3 or later
- stdlib1.25.10, 1.26.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| golang go | v < 1.25.10, 1.26.0 ≤ v < 1.26.3 | 1.25.10, 1.26.3 |
| stdlibGo | v < 1.25.10, 1.26.0-0 ≤ v < 1.26.3 | 1.25.10, 1.26.3 |
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