Fluid Attacks Database

Description

Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value "refresh". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escaping URLs in actions in the meta content attribute which follow "url=" by setting htmlmetacontenturlescape=0.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Package	Affected version	Patched versions
debian 14	golang-1.25	=1.25.0-1 \|\| =1.25.0-2 \|\| =1.25.1-1 \|\| =1.25.2-1 \|\| =1.25.3-1 \|\| =1.25.6-1 \|\| =1.25.7-1 \|\| =1.25.7-2 \|\| >=0 <1.25.8-1	1.25.8-1
go	stdlib	>=0 <1.25.8	1.25.8
debian 12	golang-1.19	=1.19.10-1 \|\| =1.19.10-2 \|\| =1.19.11-1 \|\| =1.19.12-1 \|\| =1.19.12-2 \|\| =1.19.12-2~bpo11+1 \|\| =1.19.12-2~bpo12+1 \|\| =1.19.13-1 \|\| =1.19.13-1~bpo11+1 \|\| =1.19.13-1~bpo12+1 \|\| =1.19.8-2 \|\| =1.19.9-1	-
debian 13	golang-1.24	=1.24.12-1 \|\| =1.24.13-1 \|\| =1.24.13-2 \|\| =1.24.4-1 \|\| =1.24.4-2 \|\| =1.24.4-3 \|\| =1.24.4-4 \|\| =1.24.7-1 \|\| =1.24.8-1 \|\| =1.24.9-1	-
debian 11	golang-1.15	=1.15.15-1 \|\| =1.15.15-1~deb11u1 \|\| =1.15.15-1~deb11u2 \|\| =1.15.15-1~deb11u3 \|\| =1.15.15-1~deb11u4 \|\| =1.15.15-2 \|\| =1.15.15-3 \|\| =1.15.15-4 \|\| =1.15.15-5 \|\| =1.15.9-6	-
debian 14	golang-1.26	=1.26.0-1 \|\| =1.26~rc2-1 \|\| =1.26~rc3-1 \|\| =1.26~rc3-2 \|\| >=0 <1.26.1-1	1.26.1-1
rpm rhel10	golang	-	-
rpm rhel8	golang	-	-
rpm rhel9	golang	-	-

Aliases

1. CVE-2026-271422. NVD-2026-271423. OSV-DEBIAN-2026-271424. OSV-2026-271425. OSV-GO-2026-46036. GCVE-2026-271427. SECURITY-TRACKER-CVE-2026-27142

References

1. https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk2. https://go.dev/issue/779543. https://go.dev/cl/752081

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