CVE-2020-26679

Name: CVE-2020-26679
Creator: NVD / NIST
Published: 2021-05-26T12:15:15.9+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2020-26679 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. vFairs 3.3 is affected by Insecure Permissions. Any user logged in to a vFairs virtual conference or event can modify any other users profile information or profile picture. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

vFairs 3.3 is affected by Insecure Permissions. Any user logged in to a vFairs virtual conference or event can modify any other users profile information or profile picture. After receiving any user's unique identification number and their own, an HTTP POST request can be made update their profile description or supply a new profile image. This can lead to potential cross-site scripting attacks on any user, or upload malicious PHP webshells as "profile pictures." The user IDs can be easily determined by other responses from the API for an event or chat room.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.79%

51.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-639

Affected Software

Vendor	Product	Versions
Vfairs	Vfairs	3.3

References

http://vfairs.comVendor Advisory
https://api.vfairs.com/v1/profilesVendor Advisory
https://api.vfairs.com/v1/profiles?access_key=Vendor Advisory
https://www.huntress.com/blog/zero-day-vulnerabilities-in-popular-event-management-platforms-could-leave-msps-open-to-attackThird Party Advisory
http://vfairs.comVendor Advisory
https://api.vfairs.com/v1/profilesVendor Advisory
https://api.vfairs.com/v1/profiles?access_key=Vendor Advisory
https://www.huntress.com/blog/zero-day-vulnerabilities-in-popular-event-management-platforms-could-leave-msps-open-to-attackThird Party Advisory

Timeline

Published: May 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26679?

How severe is CVE-2020-26679?

CVE-2020-26679 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26679?

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.

Are you affected by CVE-2020-26679?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST