CVE-2026-103902

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Source
https://cve.org/CVERecord?id=CVE-2026-103902
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103902.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-103902
Published
2026-10-12T11:17:08Z
Modified
2026-10-14T07:12:27Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

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.

Database specific 
{
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "4.6.0"
                },
                {
                    "fixed":  "4.11.0"
                },
                {
                    "introduced":  "2.7.0"
                },
                {
                    "fixed":  "3.1.0"
                },
                {
                    "introduced":  "2.7.0"
                },
                {
                    "fixed":  "3.1.0"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/open-eid/libdigidocpp

Affected ranges

Type
GIT
Repo
https://github.com/open-eid/libdigidocpp
Events
Introduced
72437deddd45d38e6a39d05f849430239595e9a1
Fixed
bc64a76d46a524f92299ee5c57f6a91fc3e58ccb
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "4.0.0"
        },
        {
            "fixed":  "4.5.0"
        }
    ],
    "source":  "DESCRIPTION"
}

Affected versions

v4.*
v4.0.0
v4.1.0
v4.2.0
v4.3.0
v4.4.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103902.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "312959972205632028230483251303063886147",
                "93805658002638060122815703348188177908",
                "69711266402591952504601960314919680947",
                "70203620280218842368363274354291409124",
                "4346753961849132922032821287453467603",
                "177393883540411790573836519743645285933",
                "338050174802615739915324879924577419432",
                "108714037145691125561223776889784802819",
                "21456362281263831829929420295654825463",
                "327177442071404807151148206536985049751",
                "241814844225100063444014749951036016584",
                "274494766644415093696794491258817481568",
                "142941975100481207219440167830830426235",
                "107435632318039425845512893560780991869",
                "147134573737290235284577579038261809708",
                "258224101250907685813062929263046199077",
                "127743667511833848645032761997051325348",
                "59458320989002813863950933328606584163",
                "86418597087599216150355888942961107275",
                "35933469300476709780747217461590852428"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-103902-33d5e796",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/open-eid/libdigidocpp/commit/bc64a76d46a524f92299ee5c57f6a91fc3e58ccb",
        "target":  {
            "file":  "src/digidoc-tool.cpp"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "128878079623559237151710275958740382787",
            "length":  2687
        },
        "id":  "CVE-2026-103902-9645cccc",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/open-eid/libdigidocpp/commit/bc64a76d46a524f92299ee5c57f6a91fc3e58ccb",
        "target":  {
            "file":  "src/digidoc-tool.cpp",
            "function":  "ToolConfig::ToolConfig"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "305238429481044676657540943748768376924",
            "length":  4987
        },
        "id":  "CVE-2026-103902-b9f76181",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/open-eid/libdigidocpp/commit/bc64a76d46a524f92299ee5c57f6a91fc3e58ccb",
        "target":  {
            "file":  "src/digidoc-tool.cpp",
            "function":  "printUsage"
        }
    }
]
vanir_signatures_modified 
"2026-10-14T07:12:27Z"