CVE-2026-21790 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

HCLSoftware

Traveler

unaffected

Version	Status	Constraints
`< 14.5.1.0`	affected	—

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Tue, 24 Mar 2026 21:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 24 Mar 2026 20:30:00 +0000

Type	Values Removed	Values Added
Description		HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.
Title		HCL Traveler is susceptible to a weak default HTTP header validation vulnerability
Weaknesses		CWE-346
References		https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0129139
Metrics		cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: HCL

Published: 2026-03-24T20:04:28.585Z

Updated: 2026-03-24T20:28:10.662Z

Reserved: 2026-01-05T16:08:02.277Z

Link: CVE-2026-21790

Vulnrichment

Updated: 2026-03-24T20:28:03.392Z

NVD

Status : Received

Published: 2026-03-24T21:16:26.927

Modified: 2026-03-24T21:16:26.927

Link: CVE-2026-21790

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-346

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