# CVE-2026-15559: CodeAstro Simple Online Leave Management System SQL injection in accept.php

Source: https://junglewise.ai/threats/cve-2026-15559-codeastro-simple-online-leave-management-system-sql-injection-in  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-13. Updated: 2026-07-13  
License: CC BY 4.0 with a link back

CVE-2026-15559 · Severity: medium · CVSS 6.3 · Published 2026-07-13

CodeAstro Simple Online Leave Management System, a web application used to manage employee leave requests, is vulnerable to a security flaw. An attacker with basic user access can exploit this to gain unauthorized access to the underlying database. This could lead to the exposure of sensitive employee information, unauthorized modification of leave records, or disruption of the management system.

Technologies: [CodeAstro Simple Online Leave Management System](https://junglewise.ai/threats/technologies/simple-online-leave-management-system). Vendors: [CodeAstro](https://junglewise.ai/threats/vendors/codeastro).

## Quick answers

**Is CVE-2026-15559 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-15559 being exploited in the wild.

**How severe is CVE-2026-15559?** Medium severity, with a CVSS score of 6.3, published 13 July 2026.

**Which products and versions are affected?** CodeAstro Simple Online Leave Management System 1.0.

**Is there a fix for CVE-2026-15559?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-15559 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-15559?** Check whether you run CodeAstro Simple Online Leave Management System at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A SQL injection vulnerability exists in CodeAstro Simple Online Leave Management System 1.0 within the /SimpleOnlineLeave/admin/accept.php endpoint. The root cause is the failure to properly sanitize or parameterize the 'appid' POST parameter before using it in a database query. A remote attacker with low privileges (authenticated user) can exploit this by sending a specially crafted POST request to execute arbitrary SQL commands. Proof-of-concept exploits demonstrate that time-based blind SQL injection is possible, potentially allowing for full database extraction or modification. As of the advisory date, no official patch is confirmed, but remediation via prepared statements and input validation is recommended.

## Affected products

- CodeAstro Simple Online Leave Management System 1.0

## Timeline

- 2026-06-10: disclosed: Vulnerability discovered and reported on GitHub by sl1der-fr0g.
- 2026-07-13: advisory: CVE-2026-15559 published.

## References

- [https://codeastro.com/](https://codeastro.com/)
- [https://github.com/sl1der-fr0g/Findings/issues/3](https://github.com/sl1der-fr0g/Findings/issues/3)
- [https://vuldb.com/cve/CVE-2026-15559](https://vuldb.com/cve/CVE-2026-15559)
- [https://vuldb.com/submit/855189](https://vuldb.com/submit/855189)
- [https://vuldb.com/vuln/377908](https://vuldb.com/vuln/377908)
- [https://vuldb.com/vuln/377908/cti](https://vuldb.com/vuln/377908/cti)

## Related threats

- [CodeAstro Simple Online Leave Management System SQL injection in deletemp.php](https://junglewise.ai/threats/cve-2026-15558-codeastro-simple-online-leave-management-system-sql-injection-in)
- [CodeAstro Simple Online Leave Management System SQL injection in dashboard.php](https://junglewise.ai/threats/cve-2026-15523-codeastro-simple-online-leave-management-system-sql-injection-in)
- [CodeAstro Simple Online Leave Management System SQL injection in index.php](https://junglewise.ai/threats/cve-2026-15134-codeastro-simple-online-leave-management-system-sql-injection-in)