{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-57566",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-06-24T18:49:56.206Z",
        "datePublished": "2026-11-04T21:44:27.349Z",
        "dateUpdated": "2026-11-05T20:04:58.115Z"
    },
    "containers": {
        "cna": {
            "title": "Readest: Unauthenticated SSRF / open request proxy in /api/opds/proxy",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-918",
                            "lang": "en",
                            "description": "CWE-918: Server-Side Request Forgery (SSRF)",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 9.3,
                        "baseSeverity": "CRITICAL",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "CHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/readest/readest/security/advisories/GHSA-c7mm-g2j2-98cx",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/readest/readest/security/advisories/GHSA-c7mm-g2j2-98cx"
                },
                {
                    "name": "https://github.com/readest/readest/pull/4638",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/readest/readest/pull/4638"
                },
                {
                    "name": "https://github.com/readest/readest/commit/495783d04516d05b2eb10f8f8bad297d436b36de",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/readest/readest/commit/495783d04516d05b2eb10f8f8bad297d436b36de"
                },
                {
                    "name": "https://github.com/readest/readest/releases/tag/v0.11.10",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/readest/readest/releases/tag/v0.11.10"
                }
            ],
            "affected": [
                {
                    "vendor": "readest",
                    "product": "readest",
                    "versions": [
                        {
                            "version": "< 0.11.10",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-11-04T21:44:27.349Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Readest is a modern, feature-rich ebook reader designed for seamless cross-platform access and an intuitive reading experience. Prior to 0.11.10, the unauthenticated /api/opds/proxy route in apps/readest-app/src/app/api/opds/proxy/route.ts accepted an attacker-controlled URL and fetched it server-side without restricting the scheme, blocking private, loopback, link-local, or metadata hosts, or revalidating destinations during automatic redirect following. The route also accepted caller-controlled outbound headers and Authorization values and reflected the upstream status and response body. A remote attacker could use the service as an open request proxy and, on Node, Docker, or other self-hosted deployments with internal-network access, retrieve cloud metadata or internal-service responses. Cloudflare Workers deployments restrict access to link-local and private destinations, which reduces the internal-network impact there, but the unauthenticated public fetch-and-reflect behavior remains. This issue is fixed in version 0.11.10."
                }
            ],
            "source": {
                "advisory": "GHSA-c7mm-g2j2-98cx",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "references": [
                    {
                        "url": "https://github.com/readest/readest/security/advisories/GHSA-c7mm-g2j2-98cx",
                        "tags": [
                            "exploit"
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-11-05T20:04:36.472248Z",
                                "id": "CVE-2026-57566",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-11-05T20:04:58.115Z"
                }
            }
        ]
    }
}