{"id":"CVE-2026-14865","state":"PUBLISHED","title":"XXE Denial of Service via RadLayoutBuilder Client State in Telerik UI for ASP.NET AJAX","description":"In Progress® Telerik® UI for AJAX prior to v2026.2.708, the internal LayoutBuilder control processes client-state XML without disabling DTD processing, allowing unauthenticated denial of service via recursive XML entity expansion.","publishedAt":"2026-07-22T13:45:21.227Z","updatedAt":"2026-07-22T19:10:08.695Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","source":"ProgressSoftware"},"assigner":"ProgressSoftware","products":["Progress Software Telerik UI for ASP.NET AJAX"],"affected":[{"vendor":"Progress Software","product":"Telerik UI for ASP.NET AJAX","defaultStatus":"unaffected","versions":[{"version":"2009.1.314","status":"affected","lessThan":"2026.2.708","versionType":"custom"}]}],"references":["https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rlb-xxe-injection-client-state-cve-2026-14865"],"weaknesses":["CWE-776"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/14xxx/CVE-2026-14865.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-14865","state":"PUBLISHED","datePublished":"2026-07-22T13:45:21.227Z","dateUpdated":"2026-07-22T19:10:08.695Z","assignerShortName":"ProgressSoftware","assignerOrgId":"f9fea0b6-671e-4eea-8fde-31911902ae05","dateReserved":"2026-07-06T13:11:08.309Z"},"containers":{"cna":{"title":"XXE Denial of Service via RadLayoutBuilder Client State in Telerik UI for ASP.NET AJAX","descriptions":[{"lang":"en","value":"In Progress® Telerik® UI for AJAX prior to v2026.2.708, the internal LayoutBuilder control processes client-state XML without disabling DTD processing, allowing unauthenticated denial of service via recursive XML entity expansion."}],"affected":[{"vendor":"Progress Software","product":"Telerik UI for ASP.NET AJAX","defaultStatus":"unaffected","versions":[{"version":"2009.1.314","status":"affected","lessThan":"2026.2.708","versionType":"custom"}]}],"references":[{"url":"https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/kb-security-rlb-xxe-injection-client-state-cve-2026-14865","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW","baseSeverity":"MEDIUM","baseScore":5.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-776","lang":"en","description":"CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')","type":"CWE"}]}],"providerMetadata":{"shortName":"ProgressSoftware","orgId":"f9fea0b6-671e-4eea-8fde-31911902ae05","dateUpdated":"2026-07-22T13:45:21.227Z"},"impacts":[{"capecId":"CAPEC-197","descriptions":[{"lang":"en","value":"CAPEC-197 Exponential Data Expansion"}]}],"credits":[{"lang":"en","value":"Marcio Almeida of TantoSec","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-22T19:09:57.174189Z","id":"CVE-2026-14865","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-22T19:10:08.695Z"}}]}}}