CVE-2026-59112 json
Signature validation vulnerability affecting DigiDoc applications
published 3mo ago modified 2mo ago also EUVD-2026-55632
- cvss
- 4.4
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 1%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Estonian Information System Authority (RIA) libdigidocpp 4.2.1
- Estonian Information System Authority (RIA) DigiDoc4 4.8.2
- Estonian Information System Authority (RIA) DigiDoc 2.7.2, 2.8.1
- github.com/open-eid/libdigidocpp#690 pull request
Is CVE-2026-59112 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.12% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-11).
Exploits and checks
- github.com https://github.com/open-eid/libdigidocpp/pull/690 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 4.4 | 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 |
| CNA | 4.0 | 4.4 | 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/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 |
Affected products
- Estonian Information System Authority (RIA) libdigidocpp
- Estonian Information System Authority (RIA) DigiDoc4
- Estonian Information System Authority (RIA) DigiDoc
Classification
References
-
github.com
/open-eid/libdigidocpp/pull/690
patch, exploit
-
id.ee
/en/article/ria-soovitab-kasutajatel-uuendada-id-tarkvara-eng/
vendor-advisory
-
ria.ee
/blogi/digidoc-rakendustes-esinenud-turvanorkus-mis-juhtus-ja-kuidas-see-parandati
government-resource
Sources
- CVE List CVE-2026-59112
- NVD CVE-2026-59112
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.