Vulnerability · Published Mar 24, 2026 · Assigned by HCL
CVE-2026-21790HCL Traveler is susceptible to a weak default HTTP header validation vulnerability
Medium 6.3
In plain English
A medium-severity security flaw in Traveler from HCLSoftware. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.2%top 95.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HCLSoftware | Traveler | < 14.5.1.0 |
Weakness: CWE-346 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L