Bug 2548346 (CVE-2026-94448)

Summary: CVE-2026-94448 html/template: golang: golang: cross-site scripting via consecutive expressions in JavaScript template literals
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akhatavk, amctagga, ansmith, anthomas, aoconnor, aos-team-art-private, asdas, bbrownin, bniver, crizzo, dhanak, dkeler, dpaolell, drosa, dschmidt, dsimansk, eglynn, ehelms, flucifre, ggainey, gmeno, groman, ikhan, jbritton, jburrell, jdelft, jeder, jjoyce, jlanda, jpasqual, jpretori, jschluet, jupierce, juwatts, kingland, kshier, lchilton, lgarciaa, lhh, mbenjamin, mbiarnes, mburns, mdellweg, mgarciac, mhackett, mhulan, mnovotny, nmoumoul, osousa, pcreech, pjindal, ppalepu, ppostler, prdhamdh, rbobbitt, rchan, rhel-process-autobot, sausingh, sfeifer, sghai, sidsharm, simaishi, smallamp, sostapov, stcannon, suppawar, thason, tmalecek, vereddy, vkarehfa, vlaad, watson-tool-maintainers, yguenane
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the html/template package in Go. This vulnerability allows a remote attacker to conduct cross-site scripting (XSS, an attack that executes malicious scripts in a user's browser) through improper output escaping. When a JavaScript template literal contains consecutive expressions, the parser fails to properly reset its context tracking state. Consequently, subsequent regular expression literals are not accurately recognized and escaped, potentially allowing untrusted content to bypass template sanitization.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-08 23:01:59 UTC 
When a JavaScript template literal contains consecutive expressions, the context tracking state was not properly reset upon entering a new expression. We now ensure that template-literal expression entries correctly reset context variables so all subsequent regular expression literals are accurately recognized and escaped.