Vulnerability in Bigbluebutton
CVE-2020-27602
BigBlueButton before 2.2.7 does not have a protection mechanism for separator injection in meetingId, userId, and authToken.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.014 (71.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/bigbluebutton/bigbluebutton/compare/v2.2.6...v2.2.7 (Third Party Advisory, Release Notes)
- github.com/bigbluebutton/bigbluebutton/commit/4bfd924c64da2681f4c037026021f47eb… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-27602?
- CVE-2020-27602 is a critical-severity vulnerability in Bigbluebutton, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2022-09-29.
- How severe is CVE-2020-27602?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-27602 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.