CVE-2021-36747
Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.
Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.
- Record
CVE-2021-36747- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.
- Record
CVE-2021-36747- Updated
- 2026-11-02
EUVDEUVD-2021-23337 No score
Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.
- Record
EUVD-2021-23337- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-42mm-xxc6-g629 No score
Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.
Blackboard Learn through 9.1 allows XSS by an authenticated user via the Feedback to Learner form.
- Record
GHSA-42mm-xxc6-g629- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | cseasholtz/CVE-2021-36747 | 2021-07-20 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-36747 is a medium vulnerability (CVSS 5.4) in Blackboard Learn, published July 20, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 49th percentile. No source names a fixed version.