CVE-2020-25902
Published: 02 March 2021
Summary
CVE-2020-25902 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Blackboard Collaborate Ultra. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 40.7% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2020-18534
Vulnerability details
Blackboard Collaborate Ultra 20.02 is affected by a cross-site scripting (XSS) vulnerability. The XSS payload will execute on the class room, which leads to stealing cookies from users who join the class. NOTE: Third-parties dispute the validity of this entry…
more
as a possible false positive during research
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.