{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33741","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-23T17:34:57.561Z","datePublished":"2026-05-19T18:14:36.157Z","dateUpdated":"2026-05-20T14:02:11.490Z"},"containers":{"cna":{"title":"EspoCRM: Stored XSS via SVG attachment loading same-origin JavaScript","problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L","version":"3.1"}}],"references":[{"name":"https://github.com/espocrm/espocrm/security/advisories/GHSA-5wh5-ccv2-m3pv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/espocrm/espocrm/security/advisories/GHSA-5wh5-ccv2-m3pv"}],"affected":[{"vendor":"espocrm","product":"espocrm","versions":[{"version":"< 9.3.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-19T18:14:36.157Z"},"descriptions":[{"lang":"en","value":"EspoCRM is an open source customer relationship management application. Versions 9.3.3 and below allow authenticated users to upload SVG attachments through normal attachment-capable fields and later serve those SVG files as top-level inline documents through both the attachment and image entry points, resulting in stored cross-user XSS reachable through a normal attachment workflow. Although inline SVG script is blocked by the response CSP, the same CSP still allows same-origin external script. As a result, an attacker can upload a malicious SVG together with a second attacker-controlled JavaScript attachment, then trick another user into opening the SVG to execute JavaScript in the victim's EspoCRM origin. This issue has been fixed in version 9.3.4."}],"source":{"advisory":"GHSA-5wh5-ccv2-m3pv","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/espocrm/espocrm/security/advisories/GHSA-5wh5-ccv2-m3pv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-20T14:00:58.399359Z","id":"CVE-2026-33741","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-20T14:02:11.490Z"}}]}}