{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-30561", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-03-31T18:05:43.567Z", "dateReserved": "2026-03-04T00:00:00.000Z", "datePublished": "2026-03-30T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-03-30T15:17:07.440Z"}, "descriptions": [{"lang": "en", "value": "A Reflected Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Sales and Inventory System 1.0. The vulnerability is located in the add_purchase.php file via the \"msg\" parameter. The application fails to sanitize the input, allowing remote attackers to inject arbitrary web script or HTML via a crafted URL."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-AddPurchase-msg.md"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-79", "lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "references": [{"url": "https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-AddPurchase-msg.md", "tags": ["exploit"]}], "metrics": [{"cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-03-31T17:59:05.463153Z", "id": "CVE-2026-30561", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-31T18:05:43.567Z"}}]}, "dataVersion": "5.2"}

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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:ahsanriaz26gmailcom:sales_and_inventory_system:1.0:*:*:*:*:*:*:*", "matchCriteriaId": "5A75B7A5-65D7-4AF9-BDE8-EBD496A4942B", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A Reflected Cross-Site Scripting (XSS) vulnerability exists in SourceCodester Sales and Inventory System 1.0. The vulnerability is located in the add_purchase.php file via the \"msg\" parameter. The application fails to sanitize the input, allowing remote attackers to inject arbitrary web script or HTML via a crafted URL."}, {"lang": "es", "value": "Una vulnerabilidad de cross-site scripting (XSS) reflejado existe en SourceCodester Sales and Inventory System 1.0. La vulnerabilidad se encuentra en el archivo add_purchase.PHP a trav\u00e9s del par\u00e1metro 'msg'. La aplicaci\u00f3n no sanea la entrada, permitiendo a atacantes remotos inyectar scripts web o HTML arbitrarios a trav\u00e9s de una URL manipulada."}], "id": "CVE-2026-30561", "lastModified": "2026-04-01T15:40:32.220", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 2.7, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-03-30T16:16:05.737", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-AddPurchase-msg.md"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/meifukun/Web-Security-PoCs/blob/main/Inventory-System/XSS-AddPurchase-msg.md"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

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{"analysis": {"en": {"generated_at": "2026-03-31T19:26:50.663015+00:00", "value": {"mitigation_remediation": ["Verify that you are running SourceCodester Sales and Inventory System\u202f1.0 and determine if a vendor patch or newer version is available.", "If a patch exists, download and install it immediately.", "If no patch is available, add server\u2011side input validation to the \"msg\" parameter, ensuring that any HTML or script tags are properly escaped or removed.", "Configure a Content Security Policy that limits script execution to trusted sources and blocks inline JavaScript.", "Deploy or enable a web application firewall with XSS filtering to detect and block reflected script payloads.", "Regularly review web server logs for suspicious URLs containing script tags or encoded payloads.", "Educate users about phishing links and advise them not to click untrusted URLs."], "summary": {"action": "Apply Patch", "impact": "Reflected XSS via unsanitized msg parameter"}, "threat_synthesis": {"affected_systems": "The affected product is SourceCodester Sales and Inventory System 1.0. No other versions or related products are listed. The vulnerability is confined to the add_purchase.php handler\n", "description_and_impact": "The vulnerability is a reflected Cross\u2011Site Scripting flaw in SourceCodester Sales and Inventory System 1.0. The add_purchase.php script accepts a \"msg\" parameter and echoes its value without sanitization. An attacker can embed arbitrary JavaScript or malicious HTML in a crafted URL, which the browser will execute in the victim\u2019s session. This can be used to deface the site, steal session cookies, or redirect users to phishing sites, thereby compromising confidentiality and integrity of user data.\n", "risk_and_exploitability": "The CVSS score of 5.4 classifies the flaw as moderate severity. The EPSS score of less than 1% suggests low current exploitation probability, and the vulnerability is not on the CISA KEV catalog. Attackers can exploit the flaw simply by clicking a malicious link or by embedding the payload in a URL, making the attack vector likely to be remote and low\u2011barrier. While the risk is moderate, the impact on user trust and potential data theft warrants prompt attention.\n"}}}}, "created": "2026-03-30T20:56:22.272298+00:00", "updated": "2026-03-31T20:00:24.999186+00:00", "vendors": []}