CVE-2026-21790

MEDIUM

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

Title source: cna

Description

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

References (1)

Core 1

Core References

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

Scores

CVSS v3 6.3

EPSS 0.0015

EPSS Percentile 4.5%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-346

Status published

Products (1)

HCLSoftware/Traveler < 14.5.1.0

Published Mar 24, 2026

Tracked Since Mar 25, 2026