{"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"}}]}}

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{"cveTags": [], "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."}], "id": "CVE-2026-33741", "lastModified": "2026-05-20T14:16:42.190", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.1, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-19T19:16:49.463", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/espocrm/espocrm/security/advisories/GHSA-5wh5-ccv2-m3pv"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/espocrm/espocrm/security/advisories/GHSA-5wh5-ccv2-m3pv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,9.3.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "espocrm", "source": "cna", "vendor": "espocrm"}, "product": "espocrm", "vendor": "espocrm"}], "created": "2026-05-19T19:30:12.410467+00:00", "updated": "2026-05-19T20:00:13.350923+00:00", "vendors": ["espocrm", "espocrm$PRODUCT$espocrm"]}