How severe is CVE-2020-26679?

CVE-2020-26679 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2020-26679 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26679?

CVE-2020-26679 affects Vfairs. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-26679?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-26679 published?

CVE-2020-26679 was published on 2021-05-26 and last updated on 2026-07-05.

CVE-2020-26679

CVE-2020-26679 is a medium-severity vulnerability in Vfairs with a CVSS 3.x base score of 4.3. 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-639.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Vfairs
Published: 2021-05-26
Last modified: 2026-07-05

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.

Frequently asked questions

What is CVE-2020-26679?: 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.
How severe is CVE-2020-26679?: CVE-2020-26679 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2020-26679 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26679?: CVE-2020-26679 affects Vfairs. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-26679?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26679 published?: CVE-2020-26679 was published on 2021-05-26 and last updated on 2026-07-05.

References

Affected products (1)

cpe:2.3:a:vfairs:vfairs:3.3:*:*:*:*:*:*:*

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CVE-2020-26678 — High (CVSS 8.8): vFairs 3.3 is affected by Remote Code Execution. Any user logged in to a vFairs virtual conference or event can abuse…
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CVE-2020-26680 — Medium (CVSS 5.4): In vFairs 3.3, any user logged in to a vFairs virtual conference or event can modify any other users profile…

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