CVE-2026-73278

Source
https://cve.org/CVERecord?id=CVE-2026-73278
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73278.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73278
Aliases
Downstream
MINI (2)
Published
2026-10-06T19:33:54Z
Modified
2026-10-28T02:30:52Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Gitea WebAuthn bypass during OAuth and OIDC sign-in
Details

Gitea's OAuth2 and OpenID Connect sign-in paths do not require a WebAuthn challenge when WebAuthn is the account's only configured second factor. A party able to authenticate through the affected external identity flow can obtain a full session without the passkey verification enforced during password login. One affected path can also persist an external identity link, extending the compromise beyond the initial session; accounts with TOTP configured are outside the reported WebAuthn-only scenario.

Database specific
{
    "cna_assigner":  "Gitea",
    "cwe_ids":  [
        "CWE-287"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73278.json"
}
References

Affected packages

Git / github.com/go-gitea/gitea

Affected ranges

Type
GIT
Repo
https://github.com/go-gitea/gitea
Events
Database specific
Show details
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "1.16.0"
                },
                {
                    "fixed":  "1.27.2"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "original_tag":  "v1.27.2",
            "range":  [
                {
                    "fixed":  "1dac1bb2f8593d4319125fa6bca9283000a2ddc2"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

v1.*
v1.16.0-dev
v1.16.0-rc1
v1.17.0-dev
v1.18.0-dev
v1.18.0-rc0
v1.19.0-dev
v1.19.0-rc0
v1.20.0-dev
v1.20.0-rc0
v1.21.0-dev
v1.21.0-rc0
v1.22.0-dev
v1.22.0-rc0
v1.22.0-rc1
v1.23.0-dev
v1.24.0-dev
v1.25.0-dev
v1.26.0-dev
v1.27.0
v1.27.0-dev
v1.27.0-rc0
v1.27.1
v1.28.0-dev

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73278.json"