{"id":"CVE-2026-103902","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103902","generatedAt":"2026-10-27T23:50:19.249Z","title":"Improper verification of cryptographic signature vulnerability in DigiDoc libdigidocpp, DigiDoc DigiDoc4, DigiDoc DigiDoc Android, and DigiDoc DigiDoc iOS.","description":"Improper verification of cryptographic signature vulnerability in DigiDoc libdigidocpp, DigiDoc DigiDoc4, DigiDoc DigiDoc Android, and DigiDoc DigiDoc iOS. The vulnerability allows an attacker to create forged digital signatures\n that are displayed a valid by affected DigiDoc software.This issue affects libdigidocpp: from 4.0.0 before 4.5.0; DigiDoc4: from 4.6.0 before 4.11.0; DigiDoc Android: from 2.7.0 before 3.1.0; DigiDoc iOS: from 2.7.0 before 3.1.0.","published":"2026-10-12T11:17:09.000Z","lastModified":"2026-10-16T20:04:30.000Z","status":"Deferred","sourceIdentifier":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-347"],"affected":[],"epss":{"score":0.00147,"percentile":0.03877,"date":"2026-10-26","history":[{"date":"2026-10-13","score":0.00147,"percentile":0.03461}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-12T11:17:09.000Z","detail":{"score":"7.5","severity":"HIGH","publishedAt":"2026-10-12T11:17:08.617Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://github.com/open-eid/libdigidocpp/pull/735","source":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"},{"url":"https://www.id.ee/en/article/id-tarkvara-uus-versioon-267-on-avalikustatud/","source":"a6d3dc9e-0591-4a13-bce7-0f5b31ff6158"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103902","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."}