{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-30587", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-03-25T17:05:27.741Z", "dateReserved": "2026-03-04T00:00:00.000Z", "datePublished": "2026-03-25T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-03-25T17:05:27.741Z"}, "descriptions": [{"lang": "en", "value": "Multiple Stored XSS vulnerabilities exist in Seafile Server version 13.0.15,13.0.16-pro,12.0.14 and prior and fixed in 13.0.17, 13.0.17-pro, and 12.0.20-pro, via the Seadoc (sdoc) editor. The application fails to properly sanitize WebSocket messages regarding document structure updates. This allows authenticated remote attackers to inject malicious JavaScript payloads via the src attribute of embedded Excalidraw whiteboards or the href attribute of anchor tags"}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://gist.github.com/gabdevele/1b7e30ab367b26042fa32f45aa12ce2f"}, {"url": "https://manual.seafile.com/13.0/changelog/server-changelog/"}, {"url": "https://manual.seafile.com/13.0/changelog/changelog-for-seafile-professional-server/"}, {"url": "https://manual.seafile.com/12.0/changelog/changelog-for-seafile-professional-server/"}, {"url": "https://github.com/haiwen/seahub/commit/4c5301747bdb84c64b2f2b3230417df2d1cc8987"}, {"url": "https://github.com/haiwen/seadoc-editor/commit/8fa988aaede072b2ae073d1b2edcb2fc691423b2"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Multiple Stored XSS vulnerabilities exist in Seafile Server version 13.0.15,13.0.16-pro,12.0.14 and prior and fixed in 13.0.17, 13.0.17-pro, and 12.0.20-pro, via the Seadoc (sdoc) editor. The application fails to properly sanitize WebSocket messages regarding document structure updates. This allows authenticated remote attackers to inject malicious JavaScript payloads via the src attribute of embedded Excalidraw whiteboards or the href attribute of anchor tags"}], "id": "CVE-2026-30587", "lastModified": "2026-03-25T18:16:31.793", "metrics": {}, "published": "2026-03-25T18:16:31.793", "references": [{"source": "cve@mitre.org", "url": "https://gist.github.com/gabdevele/1b7e30ab367b26042fa32f45aa12ce2f"}, {"source": "cve@mitre.org", "url": "https://github.com/haiwen/seadoc-editor/commit/8fa988aaede072b2ae073d1b2edcb2fc691423b2"}, {"source": "cve@mitre.org", "url": "https://github.com/haiwen/seahub/commit/4c5301747bdb84c64b2f2b3230417df2d1cc8987"}, {"source": "cve@mitre.org", "url": "https://manual.seafile.com/12.0/changelog/changelog-for-seafile-professional-server/"}, {"source": "cve@mitre.org", "url": "https://manual.seafile.com/13.0/changelog/changelog-for-seafile-professional-server/"}, {"source": "cve@mitre.org", "url": "https://manual.seafile.com/13.0/changelog/server-changelog/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received"}

{"bugzilla": {"description": "Seafile Server: Seadoc editor: seahub: seadoc-editor: Seafile Server: Arbitrary client-side code execution via Stored Cross-Site Scripting in Seadoc editor", "id": "2451404", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451404"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["A flaw was found in Seafile Server and its Seadoc editor. This Stored Cross-Site Scripting (XSS) vulnerability allows authenticated remote attackers to inject malicious JavaScript code. The application fails to properly sanitize WebSocket messages during document structure updates. By exploiting this, an attacker can execute arbitrary client-side scripts, potentially leading to information disclosure or unauthorized actions within a user's browser."], "name": "CVE-2026-30587", "public_date": "2026-03-25T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-30587\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-30587\nhttps://gist.github.com/gabdevele/1b7e30ab367b26042fa32f45aa12ce2f\nhttps://github.com/haiwen/seadoc-editor/commit/8fa988aaede072b2ae073d1b2edcb2fc691423b2\nhttps://github.com/haiwen/seahub/commit/4c5301747bdb84c64b2f2b3230417df2d1cc8987\nhttps://manual.seafile.com/12.0/changelog/changelog-for-seafile-professional-server/\nhttps://manual.seafile.com/13.0/changelog/changelog-for-seafile-professional-server/\nhttps://manual.seafile.com/13.0/changelog/server-changelog/"], "statement": "This MODERATE stored XSS vulnerability in Seafile Server's Seadoc editor allows authenticated users to inject malicious scripts via unsanitized WebSocket messages. Exploitation requires low privileges (any authenticated user) and user interaction (victim views document). Impact is high to confidentiality and integrity. Affects Seafile Server 13.0.15, 13.0.16-pro, 12.0.14 and prior. Fixed in 13.0.17, 13.0.17-pro, and 12.0.20-pro.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,13.0.17)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "product": "seafile", "vendor": "seafile"}], "analysis": {"en": {"generated_at": "2026-03-26T02:52:08.191663+00:00", "value": {"mitigation_remediation": ["Verify the installed Seafile Server version", "Back up existing configuration and data", "Upgrade to Seafile Server 13.0.17, 13.0.17\u2011pro, or 12.0.20\u2011pro or newer", "Restart the Seafile services to apply the update", "Validate the update by recreating a Seadoc document and ensuring no malicious scripts execute", "Maintain regular patch management to avoid regressions"], "summary": {"action": "Apply patch", "impact": "Stored XSS allowing arbitrary client\u2011side code execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects Seafile Server versions 13.0.15, 13.0.16\u2011pro, 12.0.14, and all earlier releases. The issue is fixed in 13.0.17, 13.0.17\u2011pro, and 12.0.20\u2011pro. Administrators should verify their current server version against these release numbers.", "description_and_impact": "Multiple stored cross\u2011site scripting flaws exist in Seafile Server when using the Seadoc (sdoc) editor. The server fails to sanitize WebSocket messages that carry document structure updates, allowing a malicious user to embed crafted JavaScript payloads into the src attribute of an Excalidraw whiteboard or the href attribute of an anchor tag. When a victim opens the affected document, the embedded script runs in the victim\u2019s browser, leading to arbitrary code execution in the user context.", "risk_and_exploitability": "The CVSS score of 6.3 indicates a medium severity vulnerability. Attackers must be authenticated and able to access the Seadoc editor to inject malicious content; unattended scripts cannot be delivered passively. Once a victim opens a compromised document, the injected code runs with the victim\u2019s browser privileges, potentially enabling session hijacking, data theft, or further spreading of malware within the user\u2019s environment. No publicly known exploit or CISA KEV listing is currently available, and EPSS information is not provided, but the medium CVSS score and authenticated\u2011user requirement suggest a moderate likelihood and impact."}}}}, "created": "2026-03-25T20:56:59.379162+00:00", "updated": "2026-03-26T12:18:38.947264+00:00", "vendors": ["seafile", "seafile$PRODUCT$seafile"]}