Medium 4.4Published Aug 10, 2026

CVE-2026-59112Signature validation vulnerability affecting DigiDoc applications

Updated under an hour ago (2026-10-19 10:20 UTC)

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It affects Estonian Information System Authority (RIA) libdigidocpp and 2 other products. Add what you run to find out whether that includes you.

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Every CVE for Estonian Information System Authority (RIA) libdigidocpp

Exploited in the last 30 days

Improper verification of cryptographic signature and Improper Check for Unusual or Exceptional Conditions vulnerability in Estonian Information System Authority (RIA) libdigidocpp, DigiDoc4, DigiDoc on Android, and DigiDoc on iOS. This issue affects libdigidocpp: from 4.1.0 before 4.2.1; DigiDoc4: from 4.7.0 before 4.8.2; DigiDoc on Android: from 2.7.0 before 2.7.2; DigiDoc on iOS: from 2.8.0 before 2.8.1.

CVSS: 4.4 MEDIUM (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Weakness (CWE): CWE-347, CWE-754
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: ENISA
NVD analysis: Deferred
Record last updated: Aug 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Estonian Information System Authority (RIA) libdigidocpp estonian_information_system_authority_ria:libdigidocpp (from the name)	from 4.1.0 before 4.2.1	CNA record
Estonian Information System Authority (RIA) DigiDoc4 estonian_information_system_authority_ria:digidoc4 (from the name)	from 4.7.0 before 4.8.2	CNA record
Estonian Information System Authority (RIA) DigiDoc estonian_information_system_authority_ria:digidoc (from the name)	from 2.7.0 before 2.7.2	CNA record

References

https://github.com/open-eid/libdigidocpp/pull/690patch
https://www.id.ee/en/article/ria-soovitab-kasutajatel-uuendada-id-tarkvara-eng/vendor-advisory
https://www.ria.ee/blogi/digidoc-rakendustes-esinenud-turvanorkus-mis-juhtus-ja-kuidas-see-parandatigovernment-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.