CVE-2020-27956: An Arbitrary File Upload in the Upload Image component in SourceCodester Car Rental Management System 1.0 allo

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2020-27956 is a critical-severity flaw (CVSS 9.8) affecting car rental management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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).

Why this priority

Critical severity
EPSS top 7%: very likely to be exploited
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	5.4% (top 7%)
CISA exploited list	No
Weakness	CWE-434
Published	2020-10-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: car rental management system project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-10-28 03:15 UTCPublished CVE record published
2026-06-17 03:09 UTCUpdated Record last modified

car rental management system project car rental management system DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy car-rental-management-system || rpm -q car-rental-management-system || car-rental-management-system --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison car-rental-management-system sudo apt install car-rental-management-system=<VERSION_BEFORE_1.0> sudo apt-mark hold car-rental-management-system

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list car-rental-management-system sudo dnf downgrade car-rental-management-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add car-rental-management-system

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-27956?

car rental management system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2020-27956 being exploited?

CVE-2020-27956 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-27956 affect?

CVE-2020-27956 affects car rental management system. Severity is critical (CVSS 9.8). 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/asset

How urgent is CVE-2020-27956?

Priority 67/100. Critical severity; EPSS top 7%: very likely to be exploited; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-32028 HIGH 7.2 DOWNGRADE Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/manag
CVE-2022-32027 HIGH 7.2 DOWNGRADE Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/index
CVE-2022-32026 HIGH 7.2 DOWNGRADE Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/manag
CVE-2022-32025 HIGH 7.2 DOWNGRADE Car Rental Management System v1.0 is vulnerable to SQL Injection via /car-rental-management-system/admin/view_
CVE-2022-32024 HIGH 7.2 DOWNGRADE Car Rental Management System v1.0 is vulnerable to SQL Injection via car-rental-management-system/booking.php?

References

← Back to latest CVEs