CVE-2026-29934

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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:lightcms_project:lightcms:2.0:*:*:*:*:*:*:*", "matchCriteriaId": "188FCA72-D81E-48AA-8C49-58CB4BCD877F", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A reflected cross-site scripting (XSS) vulnerability in the /admin/menus component of Lightcms v2.0 allows attackers to execute arbitrary Javascript in the context of the user's browser via modifying the referer value in the request header."}, {"lang": "es", "value": "Una vulnerabilidad de cross-site scripting (XSS) reflejada en el componente /admin/menus de Lightcms v2.0 permite a los atacantes ejecutar Javascript arbitrario en el contexto del navegador del usuario mediante la modificaci\u00f3n del valor del referer en la cabecera de la solicitud."}], "id": "CVE-2026-29934", "lastModified": "2026-06-17T10:29:56.880", "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-2026-29934", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-26T18:15:02.667193Z", "version": "2.0.3"}}]}, "published": "2026-03-26T15:16:36.017", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Mitigation"], "url": "https://github.com/eddy8/LightCMS/issues/38"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-79"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2.0]"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "lightcms", "vendor": "eddy8"}], "analysis": {"en": {"generated_at": "2026-04-02T23:10:38.744340+00:00", "value": {"mitigation_remediation": ["Apply an updated release of LightCMS that resolves the reflected XSS issue as soon as it is available.", "If an update cannot be applied immediately, configure the web server to strip or sanitize the Referer header for requests to /admin/menus, mitigating the vulnerability until a patch is installed.", "Monitor the browser console of administrative sessions for unexpected script activity or errors.", "Follow the discussion on GitHub at https://github.com/eddy8/LightCMS/issues/38 for the latest developments and potential workarounds."], "summary": {"action": "Immediate Patch", "impact": "Browser-based code execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects LightCMS version 2.0 from the LightCMS Project. No other vendors or products are listed.", "description_and_impact": "A reflected cross\u2011site scripting flaw exists in the /admin/menus component of LightCMS 2.0, allowing an attacker to inject and execute arbitrary JavaScript by modifying the Referer header of a request. This can lead to session hijacking, data exfiltration, or defacement while an administrator is authenticated.", "risk_and_exploitability": "With a CVSS base score of 6.1 the risk level is moderate, and an EPSS score below 1% indicates a low likelihood of exploitation. The flaw is not included in the CISA KEV catalog. Exfiltration requires an attacker to lure a logged\u2011in administrator to visit a crafted URL that sets the Referer header to a malicious payload, enabling the attacker to run scripts with administrative privileges."}}}}, "created": "2026-03-27T08:36:29.382565+00:00", "updated": "2026-04-03T09:39:02.573012+00:00", "vendors": ["eddy8", "eddy8$PRODUCT$lightcms"]}