What is CVE-2021-35966?

CVE-2021-35966 is a medium-severity vulnerability in Learningdigital Orca Hcm, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2021-07-19.

How severe is CVE-2021-35966?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in Learningdigital Orca Hcm

CVE-2021-35966

The specific function of the Orca HCM digital learning platform does not filter input parameters properly, which causing the URL can be redirected to any website. Remote attackers can use the vulnerability to execute phishing attacks.

Vulnerability class: Open Redirect

Published 2021-07-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Learningdigital Orca Hcm
Learningdigital.com, Inc. Orca Hcm — versions unspecified

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

www.chtsecurity.com/news/ba7b3ae7-14f3-4970-b3f6-4d97d8c7ea25 (Not Applicable)
www.twcert.org.tw/tw/cp-132-4926-dc06b-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2021-35966?: CVE-2021-35966 is a medium-severity vulnerability in Learningdigital Orca Hcm, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2021-07-19.
How severe is CVE-2021-35966?: Medium severity. CVSS v3 base score is 6.1 out of 10.