CVE-2026-103902

DigiDoc improper signature verification

Published Oct 12, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Digidoc
Digidoc digidoc4
Digidoc digidoc Android
Digidoc digidoc Ios
Digidoc libdigidocpp
Vendors & Products Digidoc
Digidoc digidoc4
Digidoc digidoc Android
Digidoc digidoc Ios
Digidoc libdigidocpp
Type Values Removed Values Added
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 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.
Title DigiDoc improper signature verification
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ENISA
Published
Updated
Oct 15, 2026, 6:07 PM
Reserved
Oct 1, 2026, 2:12 PM
Status
Deferred
Published
Oct 12, 2026, 11:17 AM
Modified
Oct 16, 2026, 8:04 PM