{"id":"CVE-2026-42506","summary":"Invoking  incorrect handling of namespaced elements in foreign content in golang.org/x/net/html","details":"Parsing arbitrary HTML which is then rendered using Render can result in an unexpected HTML tree. This can be leveraged to execute XSS attacks in applications that attempt to sanitize input HTML before rendering.","aliases":["GO-2026-5025"],"modified":"2026-07-10T10:14:43.100552120Z","published":"2026-05-22T15:01:21.056Z","related":["CGA-c62r-25jr-fmqg","SUSE-SU-2026:22065-1","SUSE-SU-2026:22066-1","SUSE-SU-2026:22074-1","SUSE-SU-2026:22075-1","SUSE-SU-2026:22193-1","SUSE-SU-2026:22226-1","SUSE-SU-2026:2285-1","SUSE-SU-2026:2706-1","SUSE-SU-2026:2733-1","SUSE-SU-2026:2768-1","SUSE-SU-2026:2824-1","SUSE-SU-2026:2827-1","openSUSE-SU-2026:10856-1","openSUSE-SU-2026:10923-1","openSUSE-SU-2026:10930-1","openSUSE-SU-2026:10941-1","openSUSE-SU-2026:11013-1","openSUSE-SU-2026:11126-1","openSUSE-SU-2026:20892-1","openSUSE-SU-2026:20956-1","openSUSE-SU-2026:20963-1","openSUSE-SU-2026:20984-1","openSUSE-SU-2026:21120-1","openSUSE-SU-2026:21251-1","openSUSE-SU-2026:21262-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"fixed":"0.55.0"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"Go","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42506.json"},"references":[{"type":"WEB","url":"https://go.dev/cl/781700"},{"type":"WEB","url":"https://go.dev/issue/79571"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8"},{"type":"WEB","url":"https://pkg.go.dev"},{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2026-5025"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42506.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42506"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/golang/net","events":[{"introduced":"0"},{"fixed":"7770ec48d03fec35e378665337b4faca93c38423"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.55.0"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:golang:net:*:*:*:*:*:go:*:*"}}],"versions":["v0.54.0","v0.41.0","v0.53.0","v0.52.0","v0.51.0","v0.50.0","v0.49.0","v0.48.0","v0.47.0","v0.46.0","v0.45.0","v0.44.0","v0.43.0","v0.42.0","v0.40.0","v0.39.0","v0.38.0","v0.37.0","v0.36.0","v0.35.0","v0.34.0","v0.33.0","v0.32.0","v0.31.0","v0.30.0","v0.29.0","v0.28.0","v0.27.0","v0.26.0","v0.25.0","v0.24.0","v0.23.0","v0.19.0","v0.22.0","v0.21.0","v0.20.0","v0.18.0","v0.17.0","v0.16.0","v0.15.0","v0.14.0","v0.13.0","v0.12.0","v0.11.0","v0.10.0","v0.9.0","v0.8.0","v0.7.0","v0.4.0","v0.6.0","v0.5.0","v0.3.0","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42506.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}