{"affected":[{"defaultStatus":"unaffected","product":"espocrm","source":"CNA: VulnCheck","vendor":"espocrm","versions":[{"lessThan":"10.0.9","status":"affected","version":"10.0.0","versionType":"semver"},{"status":"unaffected","version":"10.0.9","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"espocrm","source":"CNA: VulnCheck","vendor":"espocrm","versions":[{"lessThan":"9.3.11","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"9.3.11","versionType":"semver"}]}],"cveId":"CVE-2026-126305","cwes":["CWE-79"],"description":"EspoCRM before 9.3.11 and 10.x before 10.0.9 contains a stored cross-site scripting vulnerability in Knowledge Base articles that lets users with Knowledge Base create or edit access attach a JavaScript file and add a crafted link to the article body. When an administrator clicks the link, the script runs in their session and can create an administrator account with attacker-chosen credentials.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":8.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.3,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},{"score":8.5,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":7.3,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","version":"3.1"}],"modifiedAt":1794565055933,"publishedAt":1794562582424,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/espocrm/espocrm/security/advisories/GHSA-j6q5-9jwj-9p8q"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/espocrm-before-10.0.9-stored-xss-via-knowledge-base-article-attachments"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/espocrm/espocrm/security/advisories/GHSA-j6q5-9jwj-9p8q"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/espocrm-before-10.0.9-stored-xss-via-knowledge-base-article-attachments"}],"remediation":[],"revision":"ead6faeb1bf8242680bbb6a002a7c2210ecab0767ecee764cee0dd2357833001","sources":[{"modifiedAt":1794562582424,"name":"CNA: VulnCheck","retrievedAt":1794564589938,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126305"},{"modifiedAt":1794565055933,"name":"NVD","retrievedAt":1794572186862,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126305"}],"ssvc":null,"status":"published","title":"EspoCRM before 10.0.9 Stored XSS via Knowledge Base Article Attachments","updatedAt":1794572186862}