CVE-2026-103902
DigiDoc improper signature verification
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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 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.
| CWE | CWE-347 |
| Vendor | digidoc |
| Product | libdigidocpp |
| Published | Oct 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
DigiDoc / libdigidocpp
4.0.0 < 4.5.0
DigiDoc / DigiDoc4
4.6.0 < 4.11.0
DigiDoc / DigiDoc Android
2.7.0 < 3.1.0
DigiDoc / DigiDoc iOS
2.7.0 < 3.1.0