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        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
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        "name": "Cleartext Transmission of Sensitive Information"
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          "category": "description",
          "text": "A flaw was found in curl. A remote attacker could exploit this by initiating an unencrypted connection (via IMAP, SMTP, or POP3) and then making a subsequent request to the same host that requires Transport Layer Security (TLS). Due to incorrect connection reuse, the subsequent request would bypass the TLS requirement, leading to the transmission of sensitive information in cleartext. This vulnerability, categorized as Cleartext Transmission of Sensitive Information (CWE-319), results in information disclosure.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-4873"
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      "release_date": "2026-05-13T13:01:00Z",
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          "details": "- Impact is limited to libcurl clients for IMAP/SMTP/POP3 and only occurs when an application first makes a clear‑text connection and then, in the same process/connection pool, performs a TLS‑required request to the same host; deployments that do not initiate such client‑side email sessions or that use implicit TLS (IMAPS/POP3S/SMTPS) from the outset are not exposed. \n- The scenario has high attack complexity and requires user/application interaction (AC:H, UI:R), and the effect is confidentiality‑only with no code execution, integrity change, privilege gain, or availability impact. \n- Given these strict preconditions and the need for an initial non‑TLS hop, the practical risk to managed server/VM environments is minimal, so this CVE can be safely deprioritized.",
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            "confidentialityImpact": "HIGH",
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            "privilegesRequired": "NONE",
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            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
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