CVE-2026-21790
MEDIUMCVSS 6.3/10EPSS 0.15%
Last modified
CVE-2026-21790 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.. EPSS estimates a 0.15% chance of exploitation in the next 30 days.
Description
HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| HCLSoftware | Traveler | < 14.5.1.0 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-21790?
HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.
How severe is CVE-2026-21790?
CVE-2026-21790 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.15% probability of exploitation in the next 30 days.
How do I fix CVE-2026-21790?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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Are you affected by CVE-2026-21790?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST