CVE-2026-62367

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-62367
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62367.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-62367
Aliases
Published
2026-10-09T20:49:08Z
Modified
2026-10-11T02:47:06Z
Severity
  • 7.5 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Vikunja: OIDC email-fallback account linking ignores email_verified, enabling local-account takeover
Details

Vikunja is an open-source self-hosted task management platform. In versions 1.0.0 through 2.3.0, when an administrator enables the per-provider emailfallback option on an OpenID Connect provider, Vikunja links an SSO login to a pre-existing local (username+password) account using only the email claim from the IdP. The fallback never checks an email_verified (or Microsoft xms_edov) signal and never requires the matched account's password. An attacker who can obtain a token from the configured issuer carrying a victim's email logs in as that victim with a full session, with no consent or interaction from the victim. Version 2.4.0 fixes the issue.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-287",
        "CWE-290",
        "CWE-345"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62367.json"
}
References

Affected packages

Git / github.com/go-vikunja/vikunja

Affected ranges

Type
GIT
Repo
https://github.com/go-vikunja/vikunja
Events
Introduced
3ba5192b1bd0607998bdaf9259d795fb14530384
Fixed
907850feae3866ae9b16ea1c7b84a4d77273415a
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "1.0.0"
        },
        {
            "fixed": "2.4.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

v1.*
v1.0.0
v1.1.0
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.2.1
v2.2.2
v2.3.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62367.json"