How severe is CVE-2021-43157?

CVE-2021-43157 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-43157 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43157?

CVE-2021-43157 affects Projectworlds Online Shopping System. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43157?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2021-43157 published?

CVE-2021-43157 was published on 2021-12-22 and last updated on 2026-06-17.

CVE-2021-43157

CVE-2021-43157 is a critical-severity vulnerability in Projectworlds Online Shopping System with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Projectworlds Online Shopping System
Published: 2021-12-22
Last modified: 2026-06-17

Description

Projectsworlds Online Shopping System PHP 1.0 is vulnerable to SQL injection via the id parameter in cart_remove.php.

Frequently asked questions

What is CVE-2021-43157?: Projectsworlds Online Shopping System PHP 1.0 is vulnerable to SQL injection via the id parameter in cart_remove.php.
How severe is CVE-2021-43157?: CVE-2021-43157 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-43157 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43157?: CVE-2021-43157 affects Projectworlds Online Shopping System. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43157?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-43157 published?: CVE-2021-43157 was published on 2021-12-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:projectworlds:online_shopping_system:1.0:*:*:*:*:*:*:*

More vulnerabilities in Projectworlds Online Shopping System

CVE-2025-12215 — High (CVSS 7.3): A flaw has been found in projectworlds Online Shopping System 1.0. Impacted is an unknown function of the file…
CVE-2025-11070 — High (CVSS 7.3): A vulnerability was identified in Projectworlds Online Shopping System 1.0. This affects an unknown part of the file…
CVE-2021-43158 — Medium (CVSS 4.3): In ProjectWorlds Online Shopping System PHP 1.0, a CSRF vulnerability in cart_remove.php allows a remote attacker to…

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