Lychee: Album password bypass in ZIP downloads
Lychee is a free, open-source photo-management tool. Prior to 7.6.3, GET /api/v2/Zip authorizes album and photo archives through AlbumPolicy::canDownload() and PhotoPolicy::canDownload() without first enforcing AlbumPolicy::canAccess(). For a public, password-protected album with grants_download enabled, an unauthenticated attacker who knows the shared album identifier can download a ZIP archive without supplying the password or unlocking the album, even though browsing endpoints deny access. The archive exposes the album's photos and can include full-resolution originals and associated metadata when grants_full_photo_access is enabled. This issue is fixed in version 7.6.3.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-61838
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 8 Nov 2026, 03:29 UTC · Revision 1
Source evidence
Lychee: Album password bypass in ZIP downloads
core-osv · Original sourcePublished 15 Oct 2026, 16:32 UTC
Lychee is a free, open-source photo-management tool. Prior to 7.6.3, GET /api/v2/Zip authorizes album and photo archives through AlbumPolicy::canDownload() and PhotoPolicy::canDownload() without first enforcing AlbumPolicy::canAccess(). For a public, password-protected album with grants_download enabled, an unauthenticated attacker who knows the shared album identifier can download a ZIP archive without supplying the password or unlocking the album, even though browsing endpoints deny access. The archive exposes the album's photos and can include full-resolution originals and associated metadata when grants_full_photo_access is enabled. This issue is fixed in version 7.6.3.
osv:CVE-2026-61838
Complete source record
{
"id": "b60563b29a84dfbb5fd39b4bc06a85826f5bc0750d5dd4965e9c43a371f5ec7c",
"url": "https://osv.dev/vulnerability/CVE-2026-61838",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Lychee: Album password bypass in ZIP downloads",
"summary": "Lychee is a free, open-source photo-management tool. Prior to 7.6.3, GET /api/v2/Zip authorizes album and photo archives through AlbumPolicy::canDownload() and PhotoPolicy::canDownload() without first enforcing AlbumPolicy::canAccess(). For a public, password-protected album with grants_download enabled, an unauthenticated attacker who knows the shared album identifier can download a ZIP archive without supplying the password or unlocking the album, even though browsing endpoints deny access. The archive exposes the album's photos and can include full-resolution originals and associated metadata when grants_full_photo_access is enabled. This issue is fixed in version 7.6.3.",
"evidence": "osv:CVE-2026-61838",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-61838",
"aliases": [
"CVE-2026-61838",
"GHSA-735c-2wqc-x29r"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/lycheeorg/lychee",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "dcef326ab03c8bc43e5dfa1550afde88ad414c50"
},
{
"fixed": "4366dd0e721126dffe29659afec93aee9c1db711"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "7.6.3"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "4366dd0e721126dffe29659afec93aee9c1db711"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "dcef326ab03c8bc43e5dfa1550afde88ad414c50"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v7.6.3"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61838.json"
}
}
],
"modified": "2026-10-28T02:30:53.217935198Z",
"provider": "osv",
"references": [
"https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.3",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61838.json",
"https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-735c-2wqc-x29r",
"https://nvd.nist.gov/vuln/detail/CVE-2026-61838",
"https://github.com/LycheeOrg/Lychee/commit/4366dd0e721126dffe29659afec93aee9c1db711",
"https://github.com/LycheeOrg/Lychee/pull/4459"
],
"provider_metadata": {
"cwe_ids": [
"CWE-285",
"CWE-639"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61838.json"
}
},
"related_cves": [
{
"value": "CVE-2026-61838",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 522217,
"published_at": "2026-10-15T16:32:37.392+00:00"
}