CVE-2026-39823

Summary: CVE-2026-39823 covers an escapebug in HTML meta tag content handling that can trigger XSS when URLs are inserted into a meta tag’s content attribute and whitespace is manipulated. Multiple connected sources confirm the issue and describe the root cause as incorrect escaping of URLs insid...

CVE-2026-39823 Bypass of meta content URL escaping causes XSS in html/template

CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a tag's attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the attribute, the escaper would fail to similarly escape it, leading to XSS...

OPENSUSE-SU-2026:20496-1 Security update for go1.25

This update for go1.25 fixes the following issues: Update to go1.25.8 bsc1244485: - CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. - CVE-2026-27139: os: FileInfo can escape from a Root bsc1259268. - CVE-2026-27142: html/template: URLs in meta content attribute actio...

SUSE SLES15 Security Update : go1.26-openssl (SUSE-SU-2026:0993-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0993-1 advisory. Update to go 1.26.1 bsc1255111, jscSLE-18320: - CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. -...

Medium: golist

Issue Overview: url.Parse insufficiently validated the host/authority component and accepted some invalid URLs. CVE-2026-25679 On Unix platforms, when listing the contents of a directory using File.ReadDir or File.Readdir the returned FileInfo could reference a file outside of the Root in which t...

AZL-79604 CVE-2026-27142 affecting package gcc 11.2.0-9

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 actio...

CVE-2026-27142 URLs in meta content attribute actions are not escaped in html/template

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 actio...