CVE-2026-21790 | BDVDB-2026-322256 Detail

HCLSoftwareTraveler

Description#

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

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-346 Origin Validation Error

References#

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

Exploit#

No public exploit known

History#

Version 12026-03-24Record published in the CVE List.

Published

Published: 2026-03-24
Last modified: 2026-03-24

Vendor information

Vendor: HCLSoftware
Product: Traveler

All HCLSoftware vulnerabilities

Score

6.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 5.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 14.5.1.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.3 Medium

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

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

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).