Threats Tagged 'cve-2026-55891'
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Threats Tagged 'cve-2026-55891'
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0 PrivateBin versions prior to 2.0.5 contain a reflected JSON injection vulnerability in JSON-LD backend responses via unescaped REQUEST_URI values. The issue arises because the request URI is sanitized with FILTER_SANITIZE_URL, which does not remove certain characters like quotes, allowing attacker-controlled input to be injected into JSON responses without proper escaping. This leads to malformed JSON responses served with CORS headers and missing the X-Content-Type-Options: nosniff header, creating a defense-in-depth gap. No direct script execution has been demonstrated, but the vulnerability could affect structured-data consumers or be combined with other issues. A patch is available that properly escapes injected content and restores missing security headers. Join the discussion | GCVE Database | 08/28/2026, 20:25:34 UTC Added: 08/29/2026, 15:17:49 UTC |
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