{"id":"CVE-2026-21790","aliases":["EUVD-2026-15002","GHSA-mr94-p7f2-xw23"],"status":"published","title":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability","description":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00159,"percentile":0.05169,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-346"],"published":"2026-03-24T20:04:28Z","modified":"2026-06-17T10:19:00Z","products":[{"vendor":"hclsoftware","product":"traveler"}],"references":[{"url":"https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0129139"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21790"},{"url":"https://github.com/advisories/GHSA-mr94-p7f2-xw23"}],"sources":{"cve":[{"id":"CVE-2026-21790","title":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability","description":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.","status":"published","published":"2026-03-24T20:04:28.585Z","modified":"2026-03-24T20:28:10.662Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T13:41:42.05254Z"}],"euvd":[{"id":"EUVD-2026-15002","description":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.","status":"published","published":"2026-03-24T20:04:28Z","modified":"2026-03-24T20:28:10Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T19:25:29.547775Z"}],"ghsa":[{"id":"GHSA-mr94-p7f2-xw23","title":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could...","description":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.","status":"published","published":"2026-03-24T21:31:24Z","modified":"2026-03-24T21:31:35Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T15:06:50.028669Z"}],"nvd":[{"id":"CVE-2026-21790","description":"HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.","status":"published","published":"2026-03-24T21:16:26.927Z","modified":"2026-06-17T10:19:00.947Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:12:10.568062Z"}]}}