CVE-2026-1813

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It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet."}, {"lang": "es", "value": "Se encontr\u00f3 una vulnerabilidad en bolo-blog bolo-solo hasta la versi\u00f3n 2.6.4. Afecta a una funci\u00f3n desconocida del archivo src/main/java/org/b3log/solo/bolo/pic/PicUploadProcessor.java del componente FreeMarker Template Handler. La manipulaci\u00f3n del argumento File resulta en una carga sin restricciones. Es posible lanzar el ataque de forma remota. El exploit se ha hecho p\u00fablico y podr\u00eda usarse. Se inform\u00f3 al proyecto del problema con antelaci\u00f3n a trav\u00e9s de un informe de incidencias, pero a\u00fan no ha respondido."}], "id": "CVE-2026-1813", "lastModified": "2026-06-17T10:16:33.540", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.4, "source": "cna@vuldb.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "PROOF_OF_CONCEPT", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-1813", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-04T14:18:05.148931Z", "version": "2.0.3"}}]}, "published": "2026-02-04T00:16:08.743", "references": [{"source": "cna@vuldb.com", "tags": ["Product"], "url": "https://github.com/bolo-blog/bolo-solo/"}, {"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking", "Vendor Advisory"], "url": "https://github.com/bolo-blog/bolo-solo/issues/329"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.343981"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.343981"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.743402"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-434"}], "source": "cna@vuldb.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-434"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-18T14:07:09.197706+00:00", "value": {"mitigation_remediation": ["Upgrade to the latest official release (>=2.6.5) once the vendor provides a fix.", "If a patch is unavailable, enforce MIME type and file\u2011extension checks on the server side to allow only safe image types.", "Configure the web server to set the upload directory as non\u2011executable, preventing code execution.", "Restrict the upload endpoint to authenticated users only and apply strict access controls.", "Consider implementing a WAF rule to reject large or suspicious file uploads."], "summary": {"action": "Patch ASAP", "impact": "Unrestricted File Upload"}, "threat_synthesis": {"affected_systems": "The issue affects the bolo-blog bolo-solo platform version 2.6.4 and earlier. The vulnerable component is the PicUploadProcessor that processes file uploads within the FreeMarker Template Handler. No other versions or modules are explicitly listed as impacted in the current data.", "description_and_impact": "A vulnerability in the FreeMarker Template Handler of bolo-blog bolo-solo permits an attacker to upload arbitrary files because the PicUploadProcessor does not validate the uploaded file type or name. This flaw is a classic example of improper authorization (CWE\u2011284) and unrestricted file upload (CWE\u2011434). This unrestricted upload capability can allow the placement of malicious script files on the server, potentially leading to remote code execution or other serious compromises. The defect is coded in the PicUploadProcessor.java file used by versions up to 2.6.4.", "risk_and_exploitability": "The CVSS score is 5.3, indicating moderate severity. EPSS is reported as < 1%, suggesting low exploitation probability at present, but the exploit has been made public, so an attacker could still attempt it without much effort. The vulnerability is not yet listed in the CISA KEV catalog. Attackers can exploit it remotely by sending crafted upload requests; no local privileges or complex prerequisites are required. Because it allows uploading of any file type, there is a tangible risk of executing arbitrary code on the web server if the uploaded file is a script."}}}}, "created": "2026-02-04T12:05:32.303706+00:00", "updated": "2026-04-18T14:15:04.128466+00:00", "vendors": ["bolo-blog", "bolo-blog$PRODUCT$bolo-solo"]}