How severe is CVE-2023-4870?

CVE-2023-4870 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-4870 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4870?

CVE-2023-4870 affects Contact Manager App Project Contact Manager App. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4870?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4870 published?

CVE-2023-4870 was published on 2023-09-10 and last updated on 2026-06-17.

CVE-2023-4870

CVE-2023-4870 is a low-severity vulnerability in Contact Manager App Project Contact Manager App with a CVSS 3.x base score of 3.5. 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-79.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Contact Manager App Project Contact Manager App
Published: 2023-09-10
Last modified: 2026-06-17

Description

A vulnerability classified as problematic has been found in SourceCodester Contact Manager App 1.0. This affects an unknown part of the file index.php of the component Contact Information Handler. The manipulation of the argument contactID with the input "><sCrIpT>alert(1)</ScRiPt> leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-239355.

Frequently asked questions

What is CVE-2023-4870?: A vulnerability classified as problematic has been found in SourceCodester Contact Manager App 1.0. This affects an unknown part of the file index.php of the component Contact Information Handler. The manipulation of the argument contactID with the input "><sCrIpT>alert(1)</ScRiPt> leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-239355.
How severe is CVE-2023-4870?: CVE-2023-4870 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-4870 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4870?: CVE-2023-4870 affects Contact Manager App Project Contact Manager App. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4870?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4870 published?: CVE-2023-4870 was published on 2023-09-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:contact_manager_app_project:contact_manager_app:1.0:*:*:*:*:*:*:*

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