How severe is CVE-2022-36028?

CVE-2022-36028 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2022-36028 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-36028?

CVE-2022-36028 affects Bigbluebutton Greenlight. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-36028?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2022-36028 have an EU (EUVD) identifier?

Yes. CVE-2022-36028 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-38808.

When was CVE-2022-36028 published?

CVE-2022-36028 was published on 2024-04-25 and last updated on 2026-06-17.

CVE-2022-36028

CVE-2022-36028 is a critical-severity vulnerability in Bigbluebutton Greenlight with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-601.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2022-38808
Weakness: CWE-601
Affected product: Bigbluebutton Greenlight
Published: 2024-04-25
Last modified: 2026-06-17

Description

Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.

Frequently asked questions

What is CVE-2022-36028?: Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect vulnerability in the Login page due to unchecked the value of the `return_to` cookie. Versions 2.13.0 contains a patch for the issue.
How severe is CVE-2022-36028?: CVE-2022-36028 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2022-36028 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-36028?: CVE-2022-36028 affects Bigbluebutton Greenlight. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-36028?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2022-36028 have an EU (EUVD) identifier?: Yes. CVE-2022-36028 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-38808.
When was CVE-2022-36028 published?: CVE-2022-36028 was published on 2024-04-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bigbluebutton:greenlight:*:*:*:*:*:*:*:*

More vulnerabilities in Bigbluebutton Greenlight

CVE-2022-36029 — Critical (CVSS 9.1): Greenlight is an end-user interface for BigBlueButton servers. Versions prior to 2.13.0 have an open redirect…
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