CVE-2026-39823

EUVD-2026-28424
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.1 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 1%
Debian logo
Debian Releases
Debian Product
Codename
golang-1.15
bullseye
vulnerable
golang-1.19
bookworm
vulnerable
golang-1.24
trixie
vulnerable
golang-1.25
forky
vulnerable
sid
1.25.10-1
fixed
golang-1.26
forky
vulnerable
sid
1.26.3-1
fixed
Vulnerability Media Exposure
References
https://go.dev/cl/769920
https://go.dev/issue/78913
https://groups.google.com/g/golang-announce/c/qcCIEXso47M
https://pkg.go.dev/vuln/GO-2026-4982