CVE-2026-30561

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "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": "2026-06-17T10:32:46.557", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-30561", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-31T17:59:05.463153Z", "version": "2.0.3"}}]}, "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"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "1.0"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 90.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "sales_and_inventory_system", "vendor": "sourcecodester"}], "analysis": {"en": {"generated_at": "2026-04-06T16:38:08.594415+00:00", "value": {"mitigation_remediation": ["Escalate all user\u2011supplied input to output encoding or sanitize the \"msg\" parameter before rendering.", "Implement a Content Security Policy to restrict execution of inline scripts and limit allowed script sources.", "Upgrade to a patched version of SourceCodester Sales and Inventory System if one is released.", "If no patch is available, remove or block the vulnerable endpoint from public access paths.", "Monitor web application logs for suspicious activity and apply rate limiting on the add_purchase endpoint."], "summary": {"action": "Apply Patch", "impact": "Reflected Cross\u2011Site Scripting (XSS) allowing execution of arbitrary code in the victim's browser session"}, "threat_synthesis": {"affected_systems": "The flaw affects the free, open\u2011source Sales and Inventory System released under the SourceCodester brand, version\u00a01.0. No official vendor or patched release is listed, so users must protect themselves until an update becomes available.", "description_and_impact": "The vulnerability is a reflected Cross\u2011Site Scripting flaw located in the add_purchase.php file of SourceCodester Sales and Inventory System\u00a01.0. Attackers can embed arbitrary JavaScript or HTML in the msg query parameter, which the application outputs without escaping. This allows malicious scripts to run in the context of a victim's browser session, potentially leading to session hijacking, cookie theft, or defacement.", "risk_and_exploitability": "With a CVSS score of 6.1 and an EPSS under 1\u202f%, the risk is moderate but still noteworthy. The attack vector is local to a victim who clicks a crafted URL, making it feasible for targeted phishing campaigns. Because it is not listed in CISA\u2019s KEV catalog, there is no current evidence of widespread exploitation, yet the vulnerability remains actionable."}}}}, "created": "2026-03-30T20:56:22.272298+00:00", "updated": "2026-04-07T08:08:44.283721+00:00", "vendors": ["sourcecodester", "sourcecodester$PRODUCT$sales_and_inventory_system"]}