{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54599",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-15T19:45:23.539Z",
        "datePublished": "2026-08-31T20:30:30.913Z",
        "dateUpdated": "2026-09-01T14:43:41.741Z"
    },
    "containers": {
        "cna": {
            "title": "Wallos: OIDC state parameter never validated — login CSRF / account takeover",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-352",
                            "lang": "en",
                            "description": "CWE-352: Cross-Site Request Forgery (CSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "ACTIVE",
                        "vulnConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "HIGH",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/ellite/Wallos/security/advisories/GHSA-gr2w-m9v4-qm3v",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/ellite/Wallos/security/advisories/GHSA-gr2w-m9v4-qm3v"
                },
                {
                    "name": "https://github.com/ellite/Wallos/releases/tag/v4.9.4",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/ellite/Wallos/releases/tag/v4.9.4"
                }
            ],
            "affected": [
                {
                    "vendor": "ellite",
                    "product": "Wallos",
                    "versions": [
                        {
                            "version": "< 4.9.4",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-31T20:30:30.913Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Wallos is an open-source, self-hostable personal subscription tracker. Prior to version 4.9.4, login.php generates an OIDC state nonce stored in $_SESSION['oidc_state'], but checksession.php dispatches the OIDC callback without comparing the incoming state against the session value. An attacker can trick a victim into visiting a crafted URL, causing Wallos to exchange the attacker's authorization code and log the victim into the attacker's account. This issue has been patched in version 4.9.4."
                }
            ],
            "source": {
                "advisory": "GHSA-gr2w-m9v4-qm3v",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/ellite/Wallos/security/advisories/GHSA-gr2w-m9v4-qm3v",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-09-01T14:43:18.962401Z",
                                "id": "CVE-2026-54599",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-09-01T14:43:41.741Z"
                }
            }
        ]
    }
}