What is the CVSS score of CVE-2020-27956?

CVE-2020-27956 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 5.2%.

Is there a public PoC exploit available for CVE-2020-27956?

Yes, a public proof-of-concept exploit is available for CVE-2020-27956. Prioritise patching immediately. EPSS: 5.2%.

Car Rental Management System CVE-2020-27956

CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2020-10-28 cve@mitre.org

PHP RCE File Upload Car Rental Management System Car Rental Management System Project

9.8

CVSS 3.1 · NVD

View

Vulnerability Assessment

Weakness	CWE CWE-434 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V5 - File Handling File type validation, storage isolation MITRE ATT&CK 2 techniques across 2 tactics: Command and Control, Persistence The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	A remote attacker could upload malicious files that can be executed on the server by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

No patch listed yet 5.2% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

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. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. 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). Affected products include: Car Rental Management System Project Car Rental Management System.

Know when Car Rental Management System gets its next vulnerability

Watch products and get an email when something new is published
Check this CVE against your own stack and servers
Exploit and PoC references, threat intelligence from 22 sources

Continue with Google Continue with GitHub

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Threat Intelligence Overview

EPSS Score

5.2%

Top 9% exploitable

Exploit

POC

Public exploit code exists

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

Exploit-DB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC Yes

EPSS 5.2%

Patch available No

Active threat No

Deciding rule

CRITICAL severity + public POC available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +5

CVSS: +49

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Malicious File Upload HIGH

Malicious file upload attacks exploit insufficient validation when web applications accept user-provided files.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:car_rental_management_system_project:car_rental_management_system:1.0:*:*:*:*:*:*:*

More in Car Rental Management System

View all

CVE-2022-32019 CRITICAL Act Now POC

9.8 Jun 02

Car Rental Management System v1.0 is vulnerable to Arbitrary code execution via car-rental-management-system/admin/ajax.

CVE-2022-32020 CRITICAL Act Now POC

9.8 Jun 02

Car Rental Management System v1.0 is vulnerable to Arbitrary code execution via ip/car-rental-management-system/admin/aj

CVE-2020-29227 CRITICAL Act Now POC

9.8 Dec 14

An issue was discovered in Car Rental Management System 1.0. Rated critical severity (CVSS 9.8), this vulnerability is r

CVE-2020-29287 CRITICAL Act Now POC

9.8 Dec 02

An SQL injection vulnerability was discovered in Car Rental Management System v1.0 can be exploited via the id parameter

CVE-2022-32028 HIGH This Week POC

7.2 Jun 02

Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/manage_user.php

CVE-2022-32027 HIGH This Week POC

7.2 Jun 02

Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/index.php?page=

CVE-2022-32026 HIGH This Week POC

7.2 Jun 02

Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/manage_booking.

CVE-2022-32025 HIGH This Week POC

7.2 Jun 02

Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/view_car.php?id

CVE-2022-32024 HIGH This Week POC

7.2 Jun 02

Car Rental Management System v1.0 is vulnerable to SQL Injection via car-rental-management-system/booking.php?car_id=. R

CVE-2022-32022 HIGH This Week POC

7.2 Jun 02

Car Rental Management System v1.0 is vulnerable to SQL Injection via /ip/car-rental-management-system/admin/ajax.php?act

CVE-2022-32021 HIGH This Week POC

7.2 Jun 02

Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/manage_movement

CVE-2022-29318 HIGH This Week POC

7.2 May 11

An arbitrary file upload vulnerability in the New Entry module of Car Rental Management System v1.0 allows attackers to

Same weakness CWE-434 – Unrestricted Upload of File with Dangerous Type

View all

CVE-2016-3088 CRITICAL POC

9.8

CVE-2021-31207 MEDIUM POC

6.6

CVE-2025-52691 CRITICAL POC

10.0

CVE-2017-12617 HIGH POC

8.1

CVE-2024-50623 CRITICAL POC

9.8

CVE-2017-11357 CRITICAL POC

9.8

CVE-2017-12615 HIGH POC

8.1

CVE-2018-9206 CRITICAL POC

9.8

Same technique RCE

View all

CVE-2021-44228 CRITICAL POC

10.0

CVE-2017-7269 CRITICAL POC

9.8

CVE-2022-47966 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2023-3519 CRITICAL POC

9.8

CVE-2015-5119 CRITICAL POC

9.8

CVE-2016-4117 CRITICAL POC

9.8

CVE-2015-3113 CRITICAL POC

9.8

References

Advisories & patches

REF https://www.sourcecodester.com/php/14544/car-rental-management-system-using-phpmysqli-source-code.html

Search Externally

GitHub PoC

Exploit-DB PacketStorm Snyk Rapid7 Nuclei Templates Trickest PoC

Back