{"apiVersion":"1.0","identifier":"CVE-2026-74800","description":"SiYuan before v3.7.4 fails to set Content-Disposition and X-Content-Type-Options headers when serving arbitrary file assets, allowing stored cross-site scripting attacks. Authenticated attackers can upload HTML files as assets and execute scripts with full kernel API access when the workspace owner opens the asset link.","publishedAt":"2026-08-17T11:16:40","lastModifiedAt":"2026-08-26T17:04:27","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74800","cvssScore":9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","epssProbability":0.00288,"riskScore":0.92,"affectedProduct":"SiYuan","affectedVersions":"<3.7.4","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74800","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74800","en":"https://www.redsauce.net/en/cves/CVE-2026-74800","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74800","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74800","de":"https://www.redsauce.net/de/cves/CVE-2026-74800","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74800","el":"https://www.redsauce.net/el/cves/CVE-2026-74800"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74800"}}