CVE-2024-40402: A SQL injection vulnerability was found in 'ajax.php' of Sourcecodester Simple Library Management System 1.0

Routine

MEDIUM 6.3DOWNGRADE

CVE-2024-40402 is a medium-severity flaw (CVSS 6.3) affecting simple library management system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A SQL injection vulnerability was found in 'ajax.php' of Sourcecodester Simple Library Management System 1.0. This vulnerability stems from insufficient user input validation of the 'username' parameter, allowing attackers to inject malicious SQL queries.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-89
Published	2024-07-17
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: nikhil-bhalerao

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-07-17 20:15 UTCPublished CVE record published
2026-06-17 07:45 UTCUpdated Record last modified

nikhil-bhalerao simple library management system DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy simple-library-management-system || rpm -q simple-library-management-system || simple-library-management-system --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison simple-library-management-system sudo apt install simple-library-management-system=<VERSION_BEFORE_1.0> sudo apt-mark hold simple-library-management-system

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list simple-library-management-system sudo dnf downgrade simple-library-management-system-<VERSION_BEFORE_1.0> sudo dnf versionlock add simple-library-management-system

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-40402?

simple library management system: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-40402 being exploited?

CVE-2024-40402 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-40402 affect?

CVE-2024-40402 affects simple library management system. Severity is medium (CVSS 6.3). A SQL injection vulnerability was found in 'ajax.php' of Sourcecodester Simple Library Management System 1.0. This vulnerability stems from insufficient user input validation of the 'username' parameter, allowing attackers to inject malicio

How urgent is CVE-2024-40402?

Priority 35/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2024-40394 CRITICAL 9.8 DOWNGRADE Simple Library Management System Project Using PHP/MySQL v1.0 was discovered to contain an arbitrary file uplo

References

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