Description
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
golang: go
References4
- pkg.go.dev/vuln/GO-2026-4982 Vendor Advisory
- go.dev/cl/769920 Patch
- go.dev/issue/78913 Issue Tracking
- groups.google.com/g/golang-announce/c/qcCIEXso47M Release Notes
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 25 · as of 13 November 2026
- CWE
- CWE-79
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