{"schema":"threatline.record/2","record":{"id":"CVE-2026-103902","aliases":[],"summary":"DigiDoc improper signature verification","details":"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.","categories":["Unclassified"],"product":"libdigidocpp","vendor":"DigiDoc","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"libdigidocpp","vendor":"DigiDoc","versions":[{"status":"affected","version":"4.0.0","lessThan":"4.5.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"DigiDoc4","vendor":"DigiDoc","versions":[{"status":"affected","version":"4.6.0","lessThan":"4.11.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"DigiDoc Android","vendor":"DigiDoc","versions":[{"status":"affected","version":"2.7.0","lessThan":"3.1.0","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"DigiDoc iOS","vendor":"DigiDoc","versions":[{"status":"affected","version":"2.7.0","lessThan":"3.1.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"libdigidocpp","ecosystem":null},"version":"4.5.0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"DigiDoc4","ecosystem":null},"version":"4.11.0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"DigiDoc Android","ecosystem":null},"version":"3.1.0","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","source_modified_at":"2026-10-15T18:07:17.219Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"DigiDoc iOS","ecosystem":null},"version":"3.1.0","basis":"first unaffected version stated in the CVE record"}],"cvss":7.5,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00147,"percentile":0.03585,"score_date":"2026-10-23"},"published_at":"2026-10-12T10:25:20.361Z","modified_at":"2026-10-15T18:07:17.219Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-103902","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T18:07:17.219Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-103902","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/open-eid/libdigidocpp/pull/735","tags":["patch"]},{"source":"CVE List","url":"https://www.id.ee/en/article/id-tarkvara-uus-versioon-267-on-avalikustatud/","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-15T18:00:40.710010Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-15T18:07:17.219Z","content_hash":"a5dda0583c5e329041c2c48365ef97961a84bb9eafa153736b2db63267f85157"}}