{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-68548",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-30T19:56:44.101Z",
        "datePublished": "2026-11-12T19:39:10.279Z",
        "dateUpdated": "2026-11-13T00:25:32.382Z"
    },
    "containers": {
        "cna": {
            "title": "Algernon: Case-insensitive filesystem lets unauthenticated requests bypass /admin,/repo,/data permission-prefix gate",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-178",
                            "lang": "en",
                            "description": "CWE-178: Improper Handling of Case Sensitivity",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-863",
                            "lang": "en",
                            "description": "CWE-863: Incorrect Authorization",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 9.4,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/xyproto/algernon/security/advisories/GHSA-vm84-8c4p-64hx",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/xyproto/algernon/security/advisories/GHSA-vm84-8c4p-64hx"
                },
                {
                    "name": "https://github.com/xyproto/algernon/releases/tag/v1.17.10",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/xyproto/algernon/releases/tag/v1.17.10"
                }
            ],
            "affected": [
                {
                    "vendor": "xyproto",
                    "product": "algernon",
                    "versions": [
                        {
                            "version": "< 1.17.10",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-11-12T19:39:10.279Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Algernon is a small self-contained pure-Go web server. Prior to version 1.17.10, Algernon's URL-prefix authorization gate matches its protected prefixes (/admin, /repo, /data) with case-sensitive strings.HasPrefix, while the exact same raw req.URL.Path is later resolved against the filesystem. On case-insensitive filesystems (Windows NTFS — always; macOS APFS/HFS+ — default), a request for /Admin/secret.lua evades every protected-prefix check, falls through to the public-prefix accept branch, and then resolves on disk to admin/secret.lua. The result is an unauthenticated bypass of the /admin, /repo, and /data authorization boundary, enabling read (and, for Lua files, execution) of protected content. The permission system is active in the default configuration. This issue has been patched in version 1.17.10."
                }
            ],
            "source": {
                "advisory": "GHSA-vm84-8c4p-64hx",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/xyproto/algernon/security/advisories/GHSA-vm84-8c4p-64hx",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-11-13T00:25:03.923254Z",
                                "id": "CVE-2026-68548",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2026-11-13T00:25:32.382Z"
                }
            }
        ]
    }
}