CVE-2026-73683

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Source
https://cve.org/CVERecord?id=CVE-2026-73683
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73683.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73683
Published
2026-08-14T21:32:18.055Z
Modified
2026-08-16T03:48:28.211083164Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Laravel Socialite Facebook Provider Authentication Bypass via Nonce Replay
Details

Laravel Socialite's Facebook provider contains an authentication bypass vulnerability that allows unauthenticated attackers to replay captured OIDC idtokens by exploiting the missing nonce claim validation in the getUserByOIDCToken() function within FacebookProvider.php. Attackers who obtain a valid, unexpired idtoken issued for the same Facebook App ID can submit the captured token to the backend userFromToken() endpoint, bypassing authentication controls because signature, aud, and iss checks pass while no session-bound nonce comparison is performed, resulting in unauthorized access to victim accounts.

Database specific 
{
    "cwe_ids": [
        "CWE-294"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73683.json",
    "cna_assigner": "VulnCheck"
}
References

Affected packages

Git / github.com/laravel/socialite

Affected ranges

Type
GIT
Repo
https://github.com/laravel/socialite
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
caf714f55d51ab0d914b40033d8b0f489d6219cc
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.29.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v2.*
v2.0.11
v2.0.12
v2.0.13
v2.0.14
v3.*
v3.0.0
v4.*
v4.0.0
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.1.0
v5.1.1
v5.1.2
v5.1.3
v5.10.0
v5.11.0
v5.12.0
v5.12.1
v5.13.0
v5.13.1
v5.13.2
v5.14.0
v5.15.0
v5.15.1
v5.16.0
v5.16.1
v5.17.0
v5.17.1
v5.18.0
v5.19.0
v5.2.0
v5.2.1
v5.2.2
v5.2.3
v5.2.4
v5.2.5
v5.2.6
v5.20.0
v5.21.0
v5.22.0
v5.23.0
v5.23.1
v5.23.2
v5.24.0
v5.24.1
v5.24.2
v5.24.3
v5.25.0
v5.26.0
v5.26.1
v5.27.0
v5.28.0
v5.29.0
v5.3.0
v5.4.0
v5.5.0
v5.5.1
v5.5.2
v5.5.3
v5.5.4
v5.5.5
v5.5.6
v5.5.7
v5.5.8
v5.6.0
v5.6.1
v5.6.2
v5.6.3
v5.7.0
v5.8.0
v5.8.1
v5.9.0
v5.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73683.json"