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    CVE-2026-21783

    HCL Traveler is affected by sensitive information disclosure.  The application generates some error messages that provide detailed information about errors and failures, such as internal paths, file names, sensitive tokens, credentials, error codes, or stack traces.  Attackers could exploit this information to gain insights into the system's architecture and potentially launch targeted attacks.

    Published:Mar 24, 2026
    Last Modified:Apr 2, 2026
    EPS:Mar 24, 2026
    EPSS Score:0.00011
    CVSS Score:4.3

    Affected Products

    Vendor
    Hcltech
    Product
    Traveler

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-21790 (CVSS 6.3) — HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attac…
    CVE-2024-42192 (CVSS 5.5) — HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a credential leakage which could allow an attacker…
    CVE-2025-0278 (CVSS 4.3) — HCL Traveler is affected by an internal path disclosure in a Windows application when the application inadvert…
    CVE-2025-0279 (CVSS 4.3) — HCL Traveler generates some error messages that provide detailed information about errors and failures, such a…
    CVE-2024-30134 (CVSS 6.7) — The HCL Traveler for Microsoft Outlook executable (HTMO.exe) is being flagged as potentially Malicious Softwar…
    CVE-2022-27561 (CVSS 7.5) — There is a reflected Cross-Site Scripting vulnerability in the HCL Traveler web admin (LotusTraveler.nsf).…
    CVE-2021-27778 (CVSS 4.9) — HCL Traveler is vulnerable to a cross-site scripting (XSS) caused by improper validation of the Name parameter…
    CVE-2019-4409 (CVSS 5.4) — HCL Traveler versions 9.x and earlier are susceptible to cross-site scripting attacks. On the Problem Report p…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High