medium6.1
CVE-2026-39823
CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute.
Impact
CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the <content> attribute, the escaper would fail to similarly escape it, leading to XSS.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Golang | Go | before 1.25.10 from 1.26.0 before 1.26.3 |