dbcve.org
InjectionWeakness · CWE-74

CVE-2026-15559

MEDIUM · 6.3 CVSS v3.1 Published 2026-07-13
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Remotely reachable Zero-click 5 weeks old

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
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.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

SQL injection vulnerability in CodeAstro Simple Online Leave Management System 1.0 allows remote attackers to inject malicious SQL queries via the 'appid' parameter in the /SimpleOnlineLeave/admin/accept.php POST handler. The lack of parameterized queries or proper input sanitization enables attackers to manipulate database queries.

MitigationReplace dynamic SQL queries in accept.php with prepared statements/parameterized queries to properly sanitize the appid parameter. Apply input validation and use least-privilege database accounts as defense-in-depth.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Confirm CodeAstro Leave Management System is installed
    Locate the application by searching for directories named 'SimpleOnlineLeave' or files containing 'Leave Management System' in your web root. Check for the presence of admin/login.php or similar authentication entry points.
    Affected if The application directory structure matches CodeAstro Simple Online Leave Management System
  2. Verify the application version is 1.0
    Check for a version file, about page, or changelog within the SimpleOnlineLeave directory. If no version file exists, inspect the footer or meta tags of any HTML pages for version indicators.
    Affected if The installed version is 1.0
  3. Confirm vulnerable file exists
    Check for the presence of /SimpleOnlineLeave/admin/accept.php in your web server's document root. This is the file containing the vulnerable POST handler.
    Affected if The file accept.php exists in the admin directory
  4. Verify the appid parameter is accepted
    Examine the accept.php source code to confirm it processes a POST parameter named 'appid'. Search for code that retrieves this parameter using $_POST['appid'] or similar.
    Affected if The code accepts and processes the 'appid' parameter without parameterized queries
  5. Check for lack of SQL input sanitization
    Inspect accept.php for direct use of the appid parameter in SQL queries without prepare() statements, binding parameters, or input sanitization functions like mysqli_real_escape_string().
    Affected if The appid parameter is concatenated directly into SQL queries without sanitization or prepared statements
  6. Confirm admin endpoint is accessible
    Attempt to access the /SimpleOnlineLeave/admin/ directory via HTTP to verify the attack surface is exposed. Check if authentication is required or if the endpoint is reachable.
    Affected if The admin interface accepting POST requests to accept.php is reachable from the network

A user is affected if CodeAstro Simple Online Leave Management System version 1.0 is installed, the file /SimpleOnlineLeave/admin/accept.php exists, and the appid parameter is processed in SQL queries without parameterized queries or sanitization.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Replace dynamic SQL queries in accept.php with prepared statements/parameterized queries to properly sanitize the appid parameter. Apply input validation and use least-privilege database accounts as defense-in-depth.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-15559 in production — separate from our analysis above.

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What this is

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What belongs here
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