{"id":"CVE-2026-66090","state":"PUBLISHED","title":"XML External Entity (XXE) Injection in Metadata Field Allows Arbitrary File Read","description":"In openEQUELLA before 2026.1, the XML parser used for item metadata does not disable external entity resolution. A user permitted to create items (CREATE_ITEM) can submit crafted XML to POST /api/item and cause the server to read arbitrary files accessible to the openEQUELLA service, or make requests to attacker-specified locations (SSRF), including cloud instance metadata services.","publishedAt":"2026-10-29T01:37:37.928Z","updatedAt":"2026-10-29T02:02:13.278Z","severity":{"score":7.1,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N","source":"MON-CSIRT"},"assigner":"MON-CSIRT","products":["Apereo Foundation openEQUELLA"],"affected":[{"vendor":"Apereo Foundation","product":"openEQUELLA","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2026.1","versionType":"custom"}]}],"references":["https://github.com/openequella/openEQUELLA/security/advisories/GHSA-668q-3hpr-6c96","https://openequella.github.io/guides/"],"weaknesses":["CWE-611"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/66xxx/CVE-2026-66090.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-66090","state":"PUBLISHED","datePublished":"2026-10-29T01:37:37.928Z","dateUpdated":"2026-10-29T02:02:13.278Z","assignerShortName":"MON-CSIRT","assignerOrgId":"9c1820ae-fb77-4810-a8aa-ca46e7474d2f","dateReserved":"2026-07-24T02:22:10.431Z"},"containers":{"cna":{"title":"XML External Entity (XXE) Injection in Metadata Field Allows Arbitrary File Read","descriptions":[{"lang":"en","value":"In openEQUELLA before 2026.1, the XML parser used for item metadata does not disable external entity resolution. A user permitted to create items (CREATE_ITEM) can submit crafted XML to POST /api/item and cause the server to read arbitrary files accessible to the openEQUELLA service, or make requests to attacker-specified locations (SSRF), including cloud instance metadata services."}],"affected":[{"vendor":"Apereo Foundation","product":"openEQUELLA","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"2026.1","versionType":"custom"}]}],"references":[{"url":"https://github.com/openequella/openEQUELLA/security/advisories/GHSA-668q-3hpr-6c96","tags":["vendor-advisory"]},{"url":"https://openequella.github.io/guides/","tags":["product"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"HIGH","baseScore":7.1,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-611","lang":"en","description":"CWE-611 Improper restriction of XML external entity reference","type":"CWE"}]}],"providerMetadata":{"shortName":"MON-CSIRT","orgId":"9c1820ae-fb77-4810-a8aa-ca46e7474d2f","dateUpdated":"2026-10-29T01:37:37.928Z"},"impacts":[{"capecId":"CAPEC-201","descriptions":[{"lang":"en","value":"CAPEC-201 Serialized Data External Linking"}]},{"capecId":"CAPEC-250","descriptions":[{"lang":"en","value":"CAPEC-250 XML Injection"}]}],"solutions":[{"lang":"en","value":"Update to vendor recommended versions","supportingMedia":[{"type":"text/html","base64":false,"value":"Update to vendor recommended versions"}]}],"credits":[{"lang":"en","value":"feixy","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.4"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-66090","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-29T01:50:31.628692Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-29T02:02:13.278Z"}}]}}}