CVE-2021-4020 — MEDIUM (5.4)

Q: What is CVE-2021-4020?

CVE-2021-4020 is a vulnerability with a CVSS score of 5.4 (MEDIUM). janus-gateway is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Q: How severe is CVE-2021-4020?

CVE-2021-4020 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-4020?

Check the references section above for vendor advisories and patch information. Affected products include: Meetecho Janus.

Vulnerability Description

janus-gateway is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Meetecho	Janus	<= 0.11.5

Related Weaknesses (CWE)

CWE-79

References

https://github.com/meetecho/janus-gateway/commit/d3fc00ec803d6c41d8f98908732f44ePatchThird Party Advisory
https://huntr.dev/bounties/9814baa8-7bdd-4e31-a132-d9d15653409eExploitIssue TrackingPatch
https://github.com/meetecho/janus-gateway/commit/d3fc00ec803d6c41d8f98908732f44ePatchThird Party Advisory
https://huntr.dev/bounties/9814baa8-7bdd-4e31-a132-d9d15653409eExploitIssue TrackingPatch

FAQ

What is CVE-2021-4020?

CVE-2021-4020 is a vulnerability with a CVSS score of 5.4 (MEDIUM). janus-gateway is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

How severe is CVE-2021-4020?

CVE-2021-4020 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-4020?

Check the references section above for vendor advisories and patch information. Affected products include: Meetecho Janus.