CVE-2021-27778 Cross-site scripting in HCL Traveler
An attacker can execute malicious scripts via the Name parameter in HCL Traveler admin pages to steal cookies and session tokens.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-27778?
CVE-2021-27778 is a medium-severity cross-site scripting vulnerability in HCL Traveler, published on 31 May 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
HCL Traveler is vulnerable to a cross-site scripting (XSS) caused by improper validation of the Name parameter for Approved Applications in the Traveler administration web pages. An attacker could exploit this vulnerability to execute a malicious script to access any cookies, session tokens, or other sensitive information retained by the browser and used with that site.
Weakness: CWE-79
Which versions are affected by CVE-2021-27778?
It affects 1 product.
Products include Hcltech Traveler.
How do I fix CVE-2021-27778?
No fix has been published for CVE-2021-27778 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-27778 being exploited?
There is no known exploitation of CVE-2021-27778 in the wild and no public exploit code.
Other vulnerabilities in HCL Traveler
- CVE-2022-27561 HCL Traveler is susceptible to a Reflected Cross-Site Scripting vulnerability in the web admin (LotusTraveler.nsf)
- CVE-2019-4409 Cross-site scripting in HCL Traveler
- CVE-2026-21783 HCL Traveler is affected by sensitive information disclosure
- CVE-2025-0278 An internal path disclosure vulnerability affects HCL Traveler
- CVE-2025-0279 HCL Traveler is affected by generation of error messages containing sensitive information
Sources
Also known as GHSA-58r8-9m4c-m7wh.