CVE-2026-21790 PUBLISHED

HCL Traveler is susceptible to a weak default HTTP header validation vulnerability

Assigner: HCL
Reserved: 05.01.2026 Published: 24.03.2026 Updated: 24.03.2026

HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS Score: 6.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	HCLSoftware
Product	Traveler
Versions	Default: unaffected Version < 14.5.1.0 is affected

References

https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0129139

Problem Types

CWE-346 Origin Validation Error CWE