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CVE Record

CVE-2020-26679: vFairs 3.3 is affected by Insecure Permissions.

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2020-26679 affects vFairs 3.3. A logged-in event user could change another user’s profile information or profile picture if user IDs are known. The record says this could enable cross-site scripting or malicious file upload. There is no KEV listing or cited evidence of active exploitation.

Executive priority

Treat as high priority if your organization used vFairs 3.3 or hosted public events with untrusted attendees. The business risk is account impersonation, attendee-facing script injection, and possible malicious file upload. Confirm vendor remediation status before assuming exposure is closed.

Technical view

The issue is insecure permission enforcement in vFairs profile update functionality. The CVE description says user identifiers can be obtained from event or chat API responses, allowing authenticated users to submit profile updates for other accounts. Impact may include unauthorized profile changes, stored XSS, or malicious PHP uploaded as a profile image.

Likely exposure

Exposure appears limited to organizations using vFairs 3.3 for virtual events or conferences, especially where external attendees can authenticate. The source bundle does not confirm affected hosted tenants, later versions, or vendor patch status.

Exploitation context

No cited source or KEV entry confirms active exploitation. Abuse requires a logged-in user and knowledge of target and attacker user IDs, which the CVE says can be easily determined from API responses.

Researcher notes

The public record lacks CVSS, CWE mapping, and patch details. The strongest evidence is the CVE description and Huntress reference. Avoid assuming all vFairs versions are affected. Focus validation on authorization checks for profile updates and historical evidence of unauthorized profile changes.

Mitigation direction

  • Confirm with vFairs whether your tenant or deployment was affected and remediated.
  • If using vFairs 3.3, request vendor patch status and upgrade guidance.
  • Restrict event access to trusted users where feasible until vendor guidance is confirmed.
  • Review profile content and profile pictures for unauthorized changes.
  • Monitor for unexpected profile updates and suspicious uploaded files.
  • Disable or restrict profile image uploads if vendor-supported until remediated.

Validation and detection

  • Inventory current and historical vFairs usage, including version and event dates.
  • Ask vFairs to confirm whether object-level authorization is enforced for profile updates.
  • Review audit logs for profile changes made by unexpected users.
  • Check whether profile images were validated and stored safely.
  • Search for user complaints about altered profiles or unexpected profile images.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
1ADP providers
4Source links

Vulnerability timeline

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  1. CVE reservedCVE Program

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  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

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ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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