CVE-2026-103902

high

Improper verification of cryptographic signature vulnerability in DigiDoc libdigidocpp, DigiDoc DigiDoc4, DigiDoc DigiDoc Android, and DigiDoc DigiDoc iOS.

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.

CVSS

7.5

7.5 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity source: NVD CVSS v3.1 (a6d3dc9e-0591-4a13-bce7-0f5b31ff6158)

Timeline (UTC)

Published: 2026-10-12 11:17

Modified: 2026-10-16 20:04

NVD status: Deferred

Last synced 2 days ago

Verified against the source API 2026-10-27 06:58 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-347

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/open-eid/libdigidocpp/pull/735 a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
https://www.id.ee/en/article/id-tarkvara-uus-versioon-267-on-avalikustatud/ a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗

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