CVE-2026-21790: HCL Traveler is susceptible to a weak default HTTP header validation vulnerability
HCL Traveler is susceptible to a weak default HTTP header validation vulnerability, which could allow an attacker to bypass additional authentication checks.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-21790?
CVE-2026-21790 is considered a medium severity vulnerability due to its potential to allow attackers to bypass authentication checks.
How do I fix CVE-2026-21790?
To fix CVE-2026-21790, update HCL Traveler to the latest version that includes security patches addressing this vulnerability.
What types of attacks can exploit CVE-2026-21790?
CVE-2026-21790 can be exploited in scenarios where attackers manipulate HTTP headers to bypass authentication mechanisms.
Is CVE-2026-21790 a zero-day vulnerability?
CVE-2026-21790 is not classified as a zero-day vulnerability as it has been publicly disclosed and documented.
Are there any workarounds for CVE-2026-21790?
While updating HCL Traveler is the primary solution, additional security measures like enhanced monitoring and strict network controls can help mitigate risks associated with CVE-2026-21790.