VulnerabilityPublished 24 Mar 2026

CVE-2026-4777: SourceCodester Sales and Inventory System · SQL Injection

Affects SourceCodester Sales and Inventory SystemSource CVE Database V5

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Public exploit available · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 4.0 base score

5.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 17% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

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

Base metrics

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: Low
User Interaction: None
Vulnerable system confidentiality: Low
Vulnerable system integrity: Low
Vulnerable system availability: Low
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

Threat metrics

Exploit Maturity: POC

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: Low: The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without interaction from any human user, other than the attacker.
Vulnerable system confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the Vulnerable System are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.
Exploit Maturity: POC: Based on threat intelligence sources each of the following must apply: · Proof-of-concept is publicly available · No knowledge of reported attempts to exploit this vulnerability · No knowledge of publicly available solutions used to simplify attempts to exploit the vulnerability

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CVSS exploit maturity: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
SourceCodesterSales and Inventory System	Affected =1.0	Fixed in–

AI-suggested

Implement immediate input validation and sanitization for the 'searchtxt' parameter to reject or properly encode malicious input.
Refactor the affected code to use prepared statements or parameterized queries to prevent direct injection of user input into SQL commands.
Restrict network access to the Sales and Inventory System, limiting exposure to trusted internal networks or VPNs.
Monitor logs for unusual database query patterns or repeated failed attempts targeting the 'searchtxt' parameter.
Conduct a comprehensive security review of the entire application to identify and remediate other potential injection points.
If possible, isolate the database with least privilege principles, ensuring the application account has minimal rights.
Educate developers on secure coding practices to prevent similar vulnerabilities in future releases.
Engage with the vendor or community to obtain or develop official patches or updates addressing this vulnerability.
Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block SQL Injection attempts targeting this parameter.

Description

A security flaw has been discovered in SourceCodester Sales and Inventory System 1.0. This affects an unknown part of the file view_supplier.php of the component POST Parameter Handler. The manipulation of the argument searchtxt results in sql injection. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Impact

The SQL Injection vulnerability can lead to unauthorized disclosure of sensitive supplier and inventory data, modification or deletion of records, and potential disruption of sales and inventory operations. Attackers could leverage this flaw to escalate privileges within the database, extract confidential business information, or corrupt data integrity, impacting business continuity and trust. Organizations relying on this system may face financial losses, regulatory penalties, and reputational damage if exploited. The remote and unauthenticated nature of the attack increases the likelihood of exploitation, especially in environments exposed to the internet. While no active exploitation is currently known, the public availability of an exploit code raises the risk of opportunistic attacks. The impact is particularly significant for businesses with critical supply chain dependencies or regulatory compliance requirements involving data protection.

Summary

CVE-2026-4777 identifies a SQL Injection vulnerability in SourceCodester Sales and Inventory System version 1.0, affecting the view_supplier.php component. The vulnerability arises from improper sanitization of the POST parameter 'searchtxt', which is directly used in SQL queries without adequate validation or parameterization. This allows remote attackers to inject arbitrary SQL commands, potentially leading to unauthorized data retrieval, modification, or deletion within the underlying database. The attack vector requires no authentication or user interaction, increasing the attack surface. The vulnerability has been publicly disclosed with an exploit available, though no active exploitation has been reported. The CVSS 4.0 score of 5.3 reflects a medium severity, considering the ease of exploitation (network accessible, no authentication), but limited scope and impact due to partial confidentiality, integrity, and availability impact. The lack of official patches necessitates immediate mitigation through secure coding practices and compensating controls. This vulnerability highlights the critical need for input validation and use of parameterized queries in web applications handling database interactions.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 24 Mar 2026, 22:15 UTC

Technical details

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