CVE-2026-2551

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Affected by this vulnerability is the function delete of the file editor/control.php of the component Backup Handler. This manipulation of the argument fileName causes path traversal. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized."}, {"lang": "es", "value": "Se determin\u00f3 una vulnerabilidad en ZenTao hasta la versi\u00f3n 21.7.8. Afectada por esta vulnerabilidad es la funci\u00f3n delete del archivo editor/control.php del componente Backup Handler. Esta manipulaci\u00f3n del argumento fileName causa salto de ruta. Es posible iniciar el ataque de forma remota. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado."}], "id": "CVE-2026-2551", "lastModified": "2026-06-17T10:31:17.930", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 5.5, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "cna@vuldb.com", "type": "Secondary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "cna@vuldb.com", "type": "Secondary"}], "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:N/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": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "cna@vuldb.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-2551", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-17T14:57:38.209979Z", "version": "2.0.3"}}]}, "published": "2026-02-16T11:15:56.550", "references": [{"source": "cna@vuldb.com", "tags": ["Exploit", "Issue Tracking"], "url": "https://github.com/ez-lbz/ez-lbz.github.io/issues/10"}, {"source": "cna@vuldb.com", "tags": ["Permissions Required", "VDB Entry"], "url": "https://vuldb.com/?ctiid.346160"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?id.346160"}, {"source": "cna@vuldb.com", "tags": ["Third Party Advisory", "VDB Entry"], "url": "https://vuldb.com/?submit.749983"}], "sourceIdentifier": "cna@vuldb.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "cna@vuldb.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.0"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.1"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.2"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.3"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.4"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.5"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.6"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.7"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "21.7.8"}}], "product": "zentao", "vendor": "zentao"}], "analysis": {"en": {"generated_at": "2026-04-17T19:07:11.647857+00:00", "value": {"mitigation_remediation": ["Upgrade ZenTao to the latest released version that contains the fix for the delete function in the Backup Handler.", "If an upgrade cannot be performed immediately, disable or restrict access to the Backup Handler component or remove the delete endpoint from the web server configuration.", "Configure the server\u2019s file system permissions so that the user under which the web application runs cannot delete files in critical directories, and monitor logs for abnormal deletion attempts."], "summary": {"action": "Patch Immediately", "impact": "Path traversal enabling arbitrary file deletion"}, "threat_synthesis": {"affected_systems": "ZenTao versions up to 21.7.8 are affected. The vulnerability resides in the component Backup Handler, specifically the delete method within editor/control.php. Systems running older ZenTao installations or any custom deployments that include this component are at risk until the issue is remediated or the component is removed.", "description_and_impact": "A flaw in the delete function of ZenTao\u2019s Backup Handler allows manipulation of the fileName argument to traverse directories, which can result in the removal of any file the web process can access. The attack is feasible remotely, and the exposed control.php endpoint accepts fileName as a parameter that is not properly validated. As a result, a compromised web user or attacker able to reach the endpoint could delete configuration files, logs, or other critical resources, potentially leading to data loss or denial of service.", "risk_and_exploitability": "The CVSS score of 5.3 places the flaw in the moderate category, while the EPSS score of less than 1% indicates a very low current exploitation probability. It is not listed in the CISA KEV catalog, and the exploit has been publicly disclosed. The attack vector is remote, requiring only network access to the affected web server, and an attacker can trigger the vulnerability through a crafted HTTP request to the delete endpoint."}}}}, "created": "2026-02-17T08:49:52.266845+00:00", "updated": "2026-04-17T19:15:26.249825+00:00", "vendors": ["zentao", "zentao$PRODUCT$zentao"]}