CVE-2026-59112
Signature validation vulnerability affecting DigiDoc applications
Description
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.
INFO
Published Date :
Aug. 10, 2026, 2:17 p.m.
Last Modified :
Aug. 10, 2026, 6:18 p.m.
Remotely Exploit :
No
Source :
a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
Affected Products
The following products are affected by CVE-2026-59112
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | MEDIUM | a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 | ||||
| CVSS 4.0 | MEDIUM | a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 |
Solution
- Update libdigidocpp to version 4.2.1 or later.
- Update DigiDoc4 to version 4.8.2 or later.
- Update DigiDoc on Android to version 2.7.2 or later.
- Update DigiDoc on iOS to version 2.8.1 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59112.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59112 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59112
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59112 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59112 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 10, 2026
Action Type Old Value New Value Added Reference https://github.com/open-eid/libdigidocpp/pull/690 Added SSVC {'id': 'CVE-2026-59112', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-10T17:55:03.112154Z'} -
New CVE Received by a6d3dc9e-0591-4a13-bce7-0f5b31ff6158
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Estonian Information System Authority (RIA)', 'product': 'libdigidocpp', 'versions': [{'status': 'affected', 'version': '4.1.0', 'lessThan': '4.2.1', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Estonian Information System Authority (RIA)', 'product': 'DigiDoc4', 'versions': [{'status': 'affected', 'version': '4.7.0', 'lessThan': '4.8.2', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}, {'vendor': 'Estonian Information System Authority (RIA)', 'product': 'DigiDoc', 'versions': [{'status': 'affected', 'version': '2.7.0', 'lessThan': '2.7.2', 'versionType': 'semver'}], 'platforms': ['Android'], 'defaultStatus': 'unaffected'}, {'vendor': 'Estonian Information System Authority (RIA)', 'product': 'DigiDoc', 'versions': [{'status': 'affected', 'version': '2.8.0', 'lessThan': '2.8.1', 'versionType': 'semver'}], 'platforms': ['iOS'], 'defaultStatus': 'unaffected'}] Added Description 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. Added CVSS V4.0 AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-754 Added CWE CWE-347 Added Reference https://github.com/open-eid/libdigidocpp/pull/690 Added Reference https://www.id.ee/en/article/ria-soovitab-kasutajatel-uuendada-id-tarkvara-eng/ Added Reference https://www.ria.ee/blogi/digidoc-rakendustes-esinenud-turvanorkus-mis-juhtus-ja-kuidas-see-parandati