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Vulnerability · Published Oct 12, 2026 · Assigned by ENISA

CVE-2026-103902DigiDoc improper signature verification

High 7.5

In plain English

A high-severity security flaw in DigiDoc Android from DigiDoc. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 4% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.1%top 96.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
DigiDoc libdigidocpp 4.0.0 – before 4.5.0
DigiDoc DigiDoc4 4.6.0 – before 4.11.0
DigiDoc DigiDoc Android 2.7.0 – before 3.1.0
DigiDoc DigiDoc iOS 2.7.0 – before 3.1.0

Weakness: CWE-347 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References