{"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": "2026-11-04T21:44:27.349Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "readest", "vendor": "readest", "versions": [{"status": "affected", "version": "< 0.11.10"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-57566", "lastModified": "2026-11-04T22:18:06.850", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-11-04T22:18:06.850", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/readest/readest/commit/495783d04516d05b2eb10f8f8bad297d436b36de"}, {"source": "security-advisories@github.com", "url": "https://github.com/readest/readest/pull/4638"}, {"source": "security-advisories@github.com", "url": "https://github.com/readest/readest/releases/tag/v0.11.10"}, {"source": "security-advisories@github.com", "url": "https://github.com/readest/readest/security/advisories/GHSA-c7mm-g2j2-98cx"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-918"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}