CVE-2026-56858High· 8.1▾ TwilightFix Javascript regexp context tracking in html/template
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 44.6 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
0.2%
0.2% → 0.3%
8.1 → —
high → none
— → 8.1
none → high
8.1 → —
high → none
— → 8.1
none → high
8.1 → —
high → none
— → 8.1
none → high
Last analysed / modified upstream
Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to inject arbitrary content, potentially leading to XSS.
stdlib >= 1.27.0-0, < 1.27.0-rc.3Upgrade to a patched release:
stdlib 1.27.0-rc.3Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-56853High· 7.5Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http
CVE-2026-56859High· 7.5Add recursion depth guard during decode in encoding/xml
CVE-2026-97030Medium· 6.1A trusted template author may have previously written a valid template wherein the use of the 'yield' keyword would not be correctly escaped
CVE-2026-94448Medium· 6.1When a JavaScript template literal contains consecutive expressions, the context tracking state was not properly reset upon entering a new expression