# 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.

- **Severity:** Medium 4.9 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 31 May 2022
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-58r8-9m4c-m7wh

## 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 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-27778?

It affects 1 product.


Products: 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.

## 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](https://insights.sbomify.com/CVE-2022-27561/): HCL Traveler is susceptible to a Reflected Cross-Site Scripting vulnerability in the web admin (LotusTraveler.nsf) (high 7.5)
- [CVE-2019-4409](https://insights.sbomify.com/CVE-2019-4409/): Cross-site scripting in HCL Traveler (medium 5.4)
- [CVE-2026-21783](https://insights.sbomify.com/CVE-2026-21783/): HCL Traveler is affected by sensitive information disclosure (medium 4.3)
- [CVE-2025-0278](https://insights.sbomify.com/CVE-2025-0278/): An internal path disclosure vulnerability affects HCL Traveler (medium 4.3)
- [CVE-2025-0279](https://insights.sbomify.com/CVE-2025-0279/): HCL Traveler is affected by generation of error messages containing sensitive information (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27778 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2021-27778 in the wild and no public exploit code.

Affected product: HCL Traveler. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-27778/ (Markdown: https://insights.sbomify.com/CVE-2021-27778/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27778
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27778
- OSV: https://osv.dev/vulnerability/CVE-2021-27778

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-27778/
Summaries are generated and may contain mistakes; the official description above is the record.