CVE-2026-127121

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Source
https://cve.org/CVERecord?id=CVE-2026-127121
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-127121.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-127121
Downstream
Published
2026-11-12T15:55:12Z
Modified
2026-11-13T02:45:56Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
SOGo before 5.12.13 S/MIME Certificate Spoofing via UIxMailView
Details

SOGo before 5.12.13 contains an improper cryptographic signature verification vulnerability that allows remote attackers to replace a victim's contact S/MIME certificate by sending a spoofed multipart/signed message with a mismatched signature and an impersonated From address. Attackers can deliver a crafted CMS signedData object containing their own self-signed certificate, which SOGo's UIxMailView stores on the contact card without validating signature authenticity or certificate identity, enabling subsequent encrypted communications to be decrypted with the attacker's private key.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-347"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/127xxx/CVE-2026-127121.json"
}
References

Affected packages

Git / github.com/alinto/sogo

Affected ranges

Type
GIT
Repo
https://github.com/alinto/sogo
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e2ce2bdb6ee01e875da40744f23b3e17008e36e2
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "5.12.13"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "original_tag": "SOGo-5.12.13",
            "range": [
                {
                    "fixed": "e2ce2bdb6ee01e875da40744f23b3e17008e36e2"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

SOGo-2.*
SOGo-2.0.1
SOGo-2.0.2
SOGo-2.2.17a
SOGo-2.2.20
SOGo-2.3.0
SOGo-3.*
SOGo-3.0.0
SOGo-3.0.0b1
SOGo-3.0.0b2
SOGo-3.0.0b3
SOGo-3.0.0b4
SOGo-3.0.0b5
SOGo-3.0.1
SOGo-3.0.2
SOGo-3.1.0
SOGo-3.1.2
SOGo-3.1.3
SOGo-3.1.4
SOGo-3.1.5
SOGo-3.2.0
SOGo-3.2.1
SOGo-3.2.10
SOGo-3.2.2
SOGo-3.2.3
SOGo-3.2.4
SOGo-3.2.5
SOGo-3.2.6a
SOGo-3.2.7
SOGo-3.2.8
SOGo-3.2.9
SOGo-4.*
SOGo-4.0.0
SOGo-4.0.1
SOGo-4.0.2
SOGo-4.0.3
SOGo-4.0.4
SOGo-4.0.5
SOGo-4.0.6
SOGo-4.0.7
SOGo-4.0.8
SOGo-4.1.0
SOGo-4.1.1
SOGo-4.2.0
SOGo-4.3.0
SOGo-4.3.1
SOGo-4.3.2
SOGo-5.*
SOGo-5.0.0
SOGo-5.0.1
SOGo-5.1.0
SOGo-5.1.1
SOGo-5.10.0
SOGo-5.11.0
SOGo-5.11.1
SOGo-5.11.2
SOGo-5.12.0
SOGo-5.12.1
SOGo-5.12.10
SOGo-5.12.11
SOGo-5.12.12
SOGo-5.12.2
SOGo-5.12.3
SOGo-5.12.4
SOGo-5.12.5
SOGo-5.12.6
SOGo-5.12.7
SOGo-5.12.8
SOGo-5.2.0
SOGo-5.3.0
SOGo-5.4.0
SOGo-5.5.0
SOGo-5.5.1
SOGo-5.6.0
SOGo-5.7.0
SOGo-5.7.1
SOGo-5.8.0
SOGo-5.8.1
SOGo-5.8.2
SOGo-5.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-127121.json"