How severe is CVE-2021-27778?

CVE-2021-27778 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.

Is CVE-2021-27778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-27778?

CVE-2021-27778 affects Hcltech Traveler. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-27778?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-27778 published?

CVE-2021-27778 was published on 2022-06-01 and last updated on 2026-06-17.

CVE-2021-27778

CVE-2021-27778 is a medium-severity vulnerability in Hcltech Traveler with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
CVSS v2: 3.5
EPSS exploit prediction: 0% (27th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Hcltech Traveler
Published: 2022-06-01
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-27778?: 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.
How severe is CVE-2021-27778?: CVE-2021-27778 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
Is CVE-2021-27778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-27778?: CVE-2021-27778 affects Hcltech Traveler. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-27778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-27778 published?: CVE-2021-27778 was published on 2022-06-01 and last updated on 2026-06-17.

References

https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0098044

Affected products (1)

cpe:2.3:a:hcltech:traveler:*:*:*:*:*:*:*:*

More vulnerabilities in Hcltech Traveler

CVE-2022-27561 — High (CVSS 7.5): There is a reflected Cross-Site Scripting vulnerability in the HCL Traveler web admin (LotusTraveler.nsf).
CVE-2019-4409 — Medium (CVSS 5.4): HCL Traveler versions 9.x and earlier are susceptible to cross-site scripting attacks. On the Problem Report page of…
CVE-2026-21783 — Medium (CVSS 4.3): HCL Traveler is affected by sensitive information disclosure. The application generates some error messages that…
CVE-2025-0279 — Medium (CVSS 4.3): HCL Traveler generates some error messages that provide detailed information about errors and failures, such as…
CVE-2025-0278 — Medium (CVSS 4.3): HCL Traveler is affected by an internal path disclosure in a Windows application when the application inadvertently…

All CVEs affecting Hcltech Traveler →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

CVE-2025-49410 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Imran Emu TC…
CVE-2024-47875 — Critical (CVSS 10.0): DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to…
CVE-2024-6886 — Critical (CVSS 10.0): Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Gitea…
CVE-2023-45144 — Critical (CVSS 10.0): com.xwiki.identity-oauth:identity-oauth-ui is a package to aid in building identity and service providers based on…
CVE-2023-45138 — Critical (CVSS 10.0): Change Request is an pplication allowing users to request changes on a wiki without publishing the changes directly.…
CVE-2022-4361 — Critical (CVSS 10.0): Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the…

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →