CVE-2020-27387 (GCVE-0-2020-27387)

Vulnerability from cvelistv5 – Published: 2020-11-05 01:18 – Updated: 2024-08-04 16:11
VLAI Previdian
Summary
An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to upload and execute arbitrary PHP code by uploading a PHP payload, and then using the FileManager's rename function to provide the payload (which will receive a random name on the server) with the PHP extension, and finally executing the PHP file via an HTTP GET request to /storage/<php_file_name>. NOTE: the vendor has patched this while leaving the version number at 1.0.0-beta.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 17aeeee2-3c16-4199-bb42-d64291ca5007

Vulnerability ID: CVE-2020-27387

Status: Confirmed

Status Updated: 2020-11-05 02:18 CET

Exploited: Yes

Timestamps
First Seen: 2020-11-05
Asserted: 2020-11-05
Scope
Notes: An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to... | Affected: HorizontCMS / HorizontCMS | CVSS: 8.8 (HIGH) | EPSS: 0.18461 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title An unrestricted file upload issue in HorizontCMS through 1.0.0-beta allows an authenticated remote attacker (with access to the FileManager) to...
Cve Id CVE-2020-27387
Vendor HorizontCMS
Ghsa Id None
Product HorizontCMS
Added Date 2020-11-05T01:18:12.000Z
Cvss Score 8.8
Epss Score 0.18461
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.97161
Used In Malware unknown
Vulnerability Id CVE-2020-27387
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-02 09:11 CEST | Updated: 2026-10-02 09:11 CEST
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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