{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-26100", "assignerOrgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "state": "PUBLISHED", "assignerShortName": "Nozomi", "dateReserved": "2026-02-11T09:59:47.767Z", "datePublished": "2026-02-20T16:55:22.769Z", "dateUpdated": "2026-02-20T23:03:13.913Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "opds", "vendor": "Owl", "versions": [{"lessThanOrEqual": "2.2.0.4", "status": "affected", "version": "0", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Luca Borzacchiello at Nozomi Networks"}, {"lang": "en", "type": "finder", "value": "Gabriele Quagliarella at Nozomi Networks"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Incorrect Permission Assignment for Critical Resource in Owl opds 2.2.0.4 allows File Manipulation via a crafted network request.<br>"}], "value": "Incorrect Permission Assignment for Critical Resource in Owl opds 2.2.0.4 allows File Manipulation via a crafted network request."}], "impacts": [{"capecId": "CAPEC-165", "descriptions": [{"lang": "en", "value": "CAPEC-165 File Manipulation"}]}], "metrics": [{"cvssV4_0": {"attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "baseScore": 6.8, "baseSeverity": "MEDIUM", "exploitMaturity": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-732", "description": "CWE-732 Incorrect Permission Assignment for Critical Resource", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "shortName": "Nozomi", "dateUpdated": "2026-02-20T16:55:22.769Z"}, "references": [{"tags": ["third-party-advisory"], "url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2026-26100"}], "source": {"discovery": "UNKNOWN"}, "title": "Incorrect Permission Assignment for Critical Resource in Owl opds", "x_generator": {"engine": "Vulnogram 0.5.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-02-20T17:44:09.512432Z", "id": "CVE-2026-26100", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-20T23:03:13.913Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-26100", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-02-20T17:44:09.512432Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-20T17:44:17.519Z"}}], "cna": {"title": "Incorrect Permission Assignment for Critical Resource in Owl opds", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "finder", "value": "Luca Borzacchiello at Nozomi Networks"}, {"lang": "en", "type": "finder", "value": "Gabriele Quagliarella at Nozomi Networks"}], "impacts": [{"capecId": "CAPEC-165", "descriptions": [{"lang": "en", "value": "CAPEC-165 File Manipulation"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "baseScore": 6.8, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Owl", "product": "opds", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "2.2.0.4"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2026-26100", "tags": ["third-party-advisory"]}], "x_generator": {"engine": "Vulnogram 0.5.0"}, "descriptions": [{"lang": "en", "value": "Incorrect Permission Assignment for Critical Resource in Owl opds 2.2.0.4 allows File Manipulation via a crafted network request.", "supportingMedia": [{"type": "text/html", "value": "Incorrect Permission Assignment for Critical Resource in Owl opds 2.2.0.4 allows File Manipulation via a crafted network request.<br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-732", "description": "CWE-732 Incorrect Permission Assignment for Critical Resource"}]}], "providerMetadata": {"orgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "shortName": "Nozomi", "dateUpdated": "2026-02-20T16:55:22.769Z"}}}, "cveMetadata": {"cveId": "CVE-2026-26100", "state": "PUBLISHED", "dateUpdated": "2026-02-20T23:03:13.913Z", "dateReserved": "2026-02-11T09:59:47.767Z", "assignerOrgId": "bec8025f-a851-46e5-b3a3-058e6b0aa23c", "datePublished": "2026-02-20T16:55:22.769Z", "assignerShortName": "Nozomi"}, "dataVersion": "5.2"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:owlcyberdefense:opds-talon:2.2.0.4:*:*:*:*:*:*:*", "matchCriteriaId": "8B979FF6-C6CD-47C0-9409-EBF036DB39E6", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:owlcyberdefense:opds-100:-:*:*:*:*:*:*:*", "matchCriteriaId": "76B6558D-D323-40D3-99A7-909C24D49951", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:owlcyberdefense:opds-talon:2.2.0.4:*:*:*:*:*:*:*", "matchCriteriaId": "8B979FF6-C6CD-47C0-9409-EBF036DB39E6", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:owlcyberdefense:opds-1000:-:*:*:*:*:*:*:*", "matchCriteriaId": "FA72CA3A-BE76-49B0-A670-3EB19D29333D", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Incorrect Permission Assignment for Critical Resource in Owl opds 2.2.0.4 allows File Manipulation via a crafted network request."}, {"lang": "es", "value": "Asignaci\u00f3n incorrecta de permisos para un recurso cr\u00edtico en Owl opds 2.2.0.4 permite la manipulaci\u00f3n de archivos mediante una solicitud de red especialmente dise\u00f1ada."}], "id": "CVE-2026-26100", "lastModified": "2026-02-27T17:01:39.930", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "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:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "prodsec@nozominetworks.com", "type": "Secondary"}]}, "published": "2026-02-20T17:25:54.820", "references": [{"source": "prodsec@nozominetworks.com", "tags": ["Third Party Advisory"], "url": "https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2026-26100"}], "sourceIdentifier": "prodsec@nozominetworks.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-732"}], "source": "prodsec@nozominetworks.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,2.2.0.4]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "opds", "source": "cna", "vendor": "Owl"}, "product": "opds", "vendor": "owl"}], "analysis": {"en": {"generated_at": "2026-04-18T11:29:24.823803+00:00", "value": {"mitigation_remediation": ["Apply the vendor\u2019s security update for Owl opds 2.2.0.4 when it becomes available.", "Reconfigure the affected resource to grant only the minimum permissions required for operation, ensuring that file write or delete rights are removed for non\u2011privileged users.", "Monitor file integrity and audit logs for unexpected changes, and deploy network segmentation or firewall rules to restrict access to the Opds service from untrusted hosts."], "summary": {"action": "Patch", "impact": "File Manipulation"}, "threat_synthesis": {"affected_systems": "Based on the information presented, the vulnerability affects Owl CyberDefense Opds, specifically version 2.2.0.4. Other product variants are mentioned, but only 2.2.0.4 is confirmed to be affected.", "description_and_impact": "Based on the description, the vulnerability involves incorrect permission assignments for a critical resource in Owl opds, a weakness classified as CWE\u2011732. An attacker can send a specifically crafted network request to modify or delete files on the affected system. This can compromise the confidentiality, integrity, or availability of the system\u2019s file store.", "risk_and_exploitability": "The CVSS score of 6.8 indicates moderate severity, while the EPSS score of less than 1\u202f% suggests a very low likelihood of exploitation at present. The vulnerability has not been reported in the CISA Known Exploited Vulnerabilities catalog, implying the absence of confirmed public exploits. Attackers are likely to target the Opds service over the network, and a crafted malicious request would allow remote manipulation of files. The attack vector is inferred to be remote network-based. If the system is exposed to untrusted networks, the risk is higher; isolating the service or limiting its exposure can reduce the attack surface."}}}}, "created": "2026-02-23T14:35:27.704433+00:00", "updated": "2026-04-18T11:30:44.328073+00:00", "vendors": ["owl", "owl$PRODUCT$opds"]}