CVE-2026-39823
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.
- Published May 7, 2026
- CVSS 6.1 medium
- 0.3% chance of exploitation in the next 30 days (EPSS)
- A fix is available