{"id":"CVE-2026-57569","aliases":["EUVD-2026-102188","GHSA-vj35-v9x5-vrxh"],"status":"published","title":"Lychee: Distinct post-fix SSRF variant in Photo::fromUrl due to missing IP pinning after DNS-based validation","description":"Lychee is a free, open-source photo-management tool. Prior to 7.6.0, the POST /api/v2/Photo::fromUrl flow validates a hostname and its resolved addresses in app/Rules/PhotoUrlRule.php but later passes the original hostname through app/Actions/Import/FromUrl.php to app/Image/Files/DownloadedFile.php for a separate fopen connection. An authenticated attacker who controls DNS responses can cause validation to observe a public address and the subsequent fetch to resolve the same hostname to a private or otherwise forbidden address. This DNS rebinding time-of-check to time-of-use mismatch bypasses the intended server-side request forgery protections and can reach services available from the Lychee server, subject to deployment and TLS behavior. This issue is fixed in version 7.6.0.","severity":{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00241,"percentile":0.15416,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-367","CWE-918"],"published":"2026-10-15T16:24:34Z","modified":"2026-10-28T02:31:03Z","products":[{"vendor":"lycheeorg","product":"lychee"}],"references":[{"url":"https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-vj35-v9x5-vrxh","tags":["x_refsource_CONFIRM","exploit","advisory"]},{"url":"https://github.com/LycheeOrg/Lychee/pull/4344","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/LycheeOrg/Lychee/commit/a5f23e314f1a933d31aa650616bf9cd84bd0407e","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.0","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57569.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-57569","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-57569","title":"Lychee: Distinct post-fix SSRF variant in Photo::fromUrl due to missing IP pinning after DNS-based validation","description":"Lychee is a free, open-source photo-management tool. Prior to 7.6.0, the POST /api/v2/Photo::fromUrl flow validates a hostname and its resolved addresses in app/Rules/PhotoUrlRule.php but later passes the original hostname through app/Actions/Import/FromUrl.php to app/Image/Files/DownloadedFile.php for a separate fopen connection. An authenticated attacker who controls DNS responses can cause validation to observe a public address and the subsequent fetch to resolve the same hostname to a private or otherwise forbidden address. This DNS rebinding time-of-check to time-of-use mismatch bypasses the intended server-side request forgery protections and can reach services available from the Lychee server, subject to deployment and TLS behavior. This issue is fixed in version 7.6.0.","status":"published","published":"2026-10-15T16:24:34.652Z","modified":"2026-10-15T17:58:10.062Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L","level":"low","assessor":"cna"}],"cwes":["CWE-367","CWE-918"],"updated_at":"2026-11-02T13:43:44.898272Z"}],"euvd":[{"id":"EUVD-2026-102188","description":"Lychee is a free, open-source photo-management tool. Prior to 7.6.0, the POST /api/v2/Photo::fromUrl flow validates a hostname and its resolved addresses in app/Rules/PhotoUrlRule.php but later passes the original hostname through app/Actions/Import/FromUrl.php to app/Image/Files/DownloadedFile.php for a separate fopen connection. An authenticated attacker who controls DNS responses can cause validation to observe a public address and the subsequent fetch to resolve the same hostname to a private or otherwise forbidden address. This DNS rebinding time-of-check to time-of-use mismatch bypasses the intended server-side request forgery protections and can reach services available from the Lychee server, subject to deployment and TLS behavior. This issue is fixed in version 7.6.0.","status":"published","published":"2026-10-15T16:24:34Z","modified":"2026-10-15T17:58:10Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L","level":"low"}],"updated_at":"2026-11-02T17:00:11.403253Z"}],"nvd":[{"id":"CVE-2026-57569","description":"Lychee is a free, open-source photo-management tool. Prior to 7.6.0, the POST /api/v2/Photo::fromUrl flow validates a hostname and its resolved addresses in app/Rules/PhotoUrlRule.php but later passes the original hostname through app/Actions/Import/FromUrl.php to app/Image/Files/DownloadedFile.php for a separate fopen connection. An authenticated attacker who controls DNS responses can cause validation to observe a public address and the subsequent fetch to resolve the same hostname to a private or otherwise forbidden address. This DNS rebinding time-of-check to time-of-use mismatch bypasses the intended server-side request forgery protections and can reach services available from the Lychee server, subject to deployment and TLS behavior. This issue is fixed in version 7.6.0.","status":"published","published":"2026-10-15T17:17:24.033Z","modified":"2026-10-15T21:08:49.703Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"}],"cwes":["CWE-367","CWE-918"],"updated_at":"2026-11-02T14:12:59.751798Z"}],"osv":[{"id":"CVE-2026-57569","title":"Lychee: Distinct post-fix SSRF variant in Photo::fromUrl due to missing IP pinning after DNS-based validation","description":"Lychee is a free, open-source photo-management tool. Prior to 7.6.0, the POST /api/v2/Photo::fromUrl flow validates a hostname and its resolved addresses in app/Rules/PhotoUrlRule.php but later passes the original hostname through app/Actions/Import/FromUrl.php to app/Image/Files/DownloadedFile.php for a separate fopen connection. An authenticated attacker who controls DNS responses can cause validation to observe a public address and the subsequent fetch to resolve the same hostname to a private or otherwise forbidden address. This DNS rebinding time-of-check to time-of-use mismatch bypasses the intended server-side request forgery protections and can reach services available from the Lychee server, subject to deployment and TLS behavior. This issue is fixed in version 7.6.0.","status":"published","published":"2026-10-15T16:24:34.652Z","modified":"2026-10-28T02:31:03.685625852Z","cvss":[{"version":"4.0","score":2.3,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:L","level":"low"}],"cwes":["CWE-367","CWE-918"],"updated_at":"2026-11-02T15:45:12.016252Z"}]}}