CVE-2020-28954
MEDIUMCVSS 5.3/10EPSS 1.23%
Last modified
CVE-2020-28954 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name.. EPSS estimates a 1.23% chance of exploitation in the next 30 days.
Description
web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bigbluebutton | Bigbluebutton | < 2.2.29 |
References
- https://github.com/bigbluebutton/bigbluebutton/commit/5c911ddeec4493f40f42e2f137800ed4692004a4Patch, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/commit/e59bcd0c33a6a3203c011faa8823ba2cac1e4f37Patch, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.28...v2.2.29Release Notes, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/issues/10818Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/commit/5c911ddeec4493f40f42e2f137800ed4692004a4Patch, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/commit/e59bcd0c33a6a3203c011faa8823ba2cac1e4f37Patch, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.28...v2.2.29Release Notes, Third Party Advisory
- https://github.com/bigbluebutton/bigbluebutton/issues/10818Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-28954?
web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name.
How severe is CVE-2020-28954?
CVE-2020-28954 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.
How do I fix CVE-2020-28954?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-28954?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST