CVE-2026-61838

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.

CVSS 4.0

8.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-25)

CWEs

CWE-285, CWE-639

Published

2026-10-15

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

References

• https://github.com/LycheeOrg/Lychee/commit/4366dd0e721126dffe29659afec93aee9c1db711
• https://github.com/LycheeOrg/Lychee/pull/4459
• https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.3
• https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-735c-2wqc-x29r
• https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-735c-2wqc-x29r

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