{"id":"CVE-2026-11960","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-11960","generatedAt":"2026-10-28T05:27:55.499Z","title":"An unauthenticated attacker could systematically identify valid usernames by examining variations in the application’s responses, such as changes in response time, discrepancies between error messages or differences in HTTP status codes.","description":"Enumeration of unauthenticated users in FacturaScripts, version 2025.61. The application returns different responses when attempting to log in with a valid username compared to an invalid one. An unauthenticated attacker could systematically identify valid usernames by examining variations in the application’s responses, such as changes in response time, discrepancies between error messages or differences in HTTP status codes. A successful exploit allows the attacker to compile a list of valid user accounts. This list could be used to carry out targeted brute-force attacks, password spraying, credential stuffing or social engineering campaigns against the confirmed accounts.","published":"2026-10-20T09:17:10.000Z","lastModified":"2026-10-20T19:28:53.000Z","status":"Deferred","sourceIdentifier":"cve-coordination@incibe.es","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/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/M"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00341,"percentile":0.27472,"date":"2026-10-27","history":[{"date":"2026-10-20","score":0.00262,"percentile":0.16955}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.34%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-20T09:17:10.000Z","detail":{"score":"6.9","severity":"MEDIUM","publishedAt":"2026-10-20T09:17:09.830Z"},"summary":"New CVE, medium severity (CVSS 6.9)."}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-facturascripts","source":"cve-coordination@incibe.es"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-11960","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}