How severe is CVE-2021-43140?

CVE-2021-43140 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-2021-43140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-43140?

CVE-2021-43140 affects Oretnom23 Simple Subscription Website. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-43140?

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-2021-43140 published?

CVE-2021-43140 was published on 2021-11-03 and last updated on 2026-06-17.

CVE-2021-43140

CVE-2021-43140 is a critical-severity vulnerability in Oretnom23 Simple Subscription Website 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: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Oretnom23 Simple Subscription Website
Published: 2021-11-03
Last modified: 2026-06-17

Description

SQL Injection vulnerability exists in Sourcecodester. Simple Subscription Website 1.0. via the login.

Frequently asked questions

What is CVE-2021-43140?: SQL Injection vulnerability exists in Sourcecodester. Simple Subscription Website 1.0. via the login.
How severe is CVE-2021-43140?: CVE-2021-43140 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-2021-43140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-43140?: CVE-2021-43140 affects Oretnom23 Simple Subscription Website. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-43140?: 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-2021-43140 published?: CVE-2021-43140 was published on 2021-11-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oretnom23:simple_subscription_website:1.0:*:*:*:*:*:*:*

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