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Simple Online Leave Management System CVE-2026-15559

LOW
SQL Injection (CWE-89)
2026-07-13 VulDB
SQLi PHP Simple Online Leave Management System
2.1
CVSS 4.0 · Vendor: VulDB

Severity by source

Vendor (VulDB) PRIMARY
2.1 MEDIUM
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.3 MEDIUM

PR:L reflects mandatory low-privilege authentication confirmed by CVSS 4.0 source; S:U and low C/I/A match the bounded database-only impact with no lateral system scope change.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Severity Changed
Jul 13, 2026 - 13:22 NVD
MEDIUM LOW
CVSS changed
Jul 13, 2026 - 13:22 NVD
5.3 (MEDIUM) 2.1 (LOW)
Analysis Generated
Jul 13, 2026 - 13:16 vuln.today
CVE Published
Jul 13, 2026 - 12:00 cve.org
MEDIUM 5.3

DescriptionCVE.org

A vulnerability was detected in CodeAstro Simple Online Leave Management System 1.0. This affects an unknown part of the file /SimpleOnlineLeave/admin/accept.php of the component POST Handler. Performing a manipulation of the argument appid results in sql injection. The attack is possible to be carried out remotely. The exploit is now public and may be used.

AnalysisAI

SQL injection in CodeAstro Simple Online Leave Management System 1.0 exposes the admin accept handler to database manipulation by low-privilege authenticated remote attackers via the appid POST parameter in /SimpleOnlineLeave/admin/accept.php. The CVSS 4.0 vector (PR:L, VC:L/VI:L/VA:L) indicates constrained but real impact against the vulnerable system's database, with confidentiality, integrity, and availability all partially compromised. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Acquire low-privilege system credentials
Delivery
Send crafted POST to /admin/accept.php
Exploit
Inject SQL payload via appid parameter
Execution
Execute arbitrary SQL against backend database
Impact
Extract or modify leave management records
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Vulnerability AssessmentAI

Exploitation Exploitation requires possession of a valid low-privilege user account on the CodeAstro Simple Online Leave Management System - the CVSS 4.0 vector PR:L explicitly confirms authentication is mandatory, and unauthenticated exploitation is not supported by available data. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 5.3 (Medium) accurately reflects a constrained risk profile. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who has obtained low-privilege credentials to the leave management system - via phishing, credential stuffing, or insider access - submits a crafted HTTP POST request to `/SimpleOnlineLeave/admin/accept.php` with a SQL injection payload in the `appid` field, such as a UNION-based or boolean-based injection string. A public exploit demonstrating this technique is available at https://github.com/sl1der-fr0g/Findings/issues/3, enabling even low-skill threat actors to reproduce the attack. …
Remediation No vendor-released patch has been identified at time of analysis; organizations should monitor VulDB at https://vuldb.com/cve/CVE-2026-15559 and the CodeAstro vendor site at https://codeastro.com/ for patch availability. … Detailed patch versions, workarounds, and compensating controls in full report.
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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-15559 vulnerability details – vuln.today
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