CVE-2021-41492: Multiple SQL Injection vulnerabilities exist in Sourcecodester Simple Cashiering System (POS) 1.0 via the (1)

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2021-41492 is a critical-severity flaw (CVSS 9.8) affecting simple cashiering system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple SQL Injection vulnerabilities exist in Sourcecodester Simple Cashiering System (POS) 1.0 via the (1) Product Code in the pos page in cashiering. (2) id parameter in manage_products and the (3) t paramater in actions.php.

Why this priority

Critical severity
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	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-89
Published	2021-11-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: simple cashiering system project

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

Am I affected?

Timeline

2021-11-03 20:15 UTCPublished CVE record published
2026-06-17 04:08 UTCUpdated Record last modified

simple cashiering system project simple cashiering 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 simple-cashiering-system || rpm -q simple-cashiering-system || simple-cashiering-system --version

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

apt-cache madison simple-cashiering-system sudo apt install simple-cashiering-system=<VERSION_BEFORE_1.0> sudo apt-mark hold simple-cashiering-system

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

dnf --showduplicates list simple-cashiering-system sudo dnf downgrade simple-cashiering-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add simple-cashiering-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-2021-41492?

simple cashiering system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2021-41492 being exploited?

CVE-2021-41492 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-2021-41492 affect?

CVE-2021-41492 affects simple cashiering system. Severity is critical (CVSS 9.8). Multiple SQL Injection vulnerabilities exist in Sourcecodester Simple Cashiering System (POS) 1.0 via the (1) Product Code in the pos page in cashiering. (2) id parameter in manage_products and the (3) t paramater in actions.php.

How urgent is CVE-2021-41492?

Priority 64/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

CVE-2022-3949 LOW 3.5 DOWNGRADE A vulnerability, which was classified as problematic, has been found in Sourcecodester Simple Cashiering Syste

References

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