CVE-2019-20484Public exploitNetwork attack vector

Authenticated project file access via direct URLs

Published Jan 5, 2021 · Updated Aug 5, 2024

Improper access control in Viki Vera 4.9.1.26180 allows remote authenticated users to read or write project files via direct URLs. Project file endpoints accept a known Project URL without verifying that the logged-in account has permission to access the referenced project. Any account that can log in and obtain or guess another project's URL can download existing files or upload files to that project.

CVSS severity8.1
High
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Viki Vera 4.9.1.26180 allows remote authenticated users to read or write project files via direct URLs. Project file endpoints accept a known Project URL without verifying that the logged-in account has permission to access the referenced project. Any account that can log in and obtain or guess another project's URL can download existing files or upload files to that project.

The record

CVE
CVE-2019-20484
Published
Jan 5, 2021
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-425, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 5, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
5.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-425Direct Request ('Forced Browsing')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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