HOMEVULNERABILITIESCVE-2020-27956
CRITICAL

CVE-2020-27956

CWE-434Published: October 28, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

An Arbitrary File Upload in the Upload Image component in SourceCodester Car Rental Management System 1.0 allows the user to conduct remote code execution via admin/index.php?page=manage_car because .php files can be uploaded to admin/assets/uploads/ (under the web root).

NVD Source

Technical Analysis

CVE-2020-27956 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

car_rental_management_system_project1 product(s)
car rental management system
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.exploit-db.com/exploits/48931
ADVISORYhttps://www.sourcecodester.com/php/14544/car-rental-management-system-using-phpmysqli-source-code.html
ADVISORYhttps://www.exploit-db.com/exploits/48931
ADVISORYhttps://www.sourcecodester.com/php/14544/car-rental-management-system-using-phpmysqli-source-code.html

All References (4)

→
https://www.exploit-db.com/exploits/48931Exploit · Third Party Advisory · VDB Entry
→
https://www.sourcecodester.com/php/14544/car-rental-management-system-using-phpmysqli-source-code.htmlProduct · Third Party Advisory
→
https://www.exploit-db.com/exploits/48931Exploit · Third Party Advisory · VDB Entry
→
https://www.sourcecodester.com/php/14544/car-rental-management-system-using-phpmysqli-source-code.htmlProduct · Third Party Advisory

Quick Facts

CVE IDCVE-2020-27956
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-434
CISA KEVNo
Affected1 vendor(s)
PublishedOct 28, 2020

Related CVEs (CWE-434)

CVE-2026-48283
10.0
CVE-2024-32700
10.0
CVE-2024-34990
10.0
CVE-2024-31377
10.0
CVE-2024-34555
10.0
CVE-2025-60219
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-27956 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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