Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

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

Quick assessment

Affected
LycheeOrg Lychee
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Lychee 是一款免费且开源的照片管理工具。在 7.6.3 版本之前， 端点仅通过 和 来授权专辑及照片的归档下载，而未先强制执行 访问控制。因此，对于一个启用了“允许下载”（grants_download）功能的公开但设有密码保护的专辑，已知共享专辑 ID 的未认证攻击者无需提供密码或解锁专辑，即可下载 ZIP 格式的归档文件。尽管常规的浏览端点会拒绝访问，但该漏洞仍可被利用。此外，若启用了“允许完全照片访问”（grants_full_photo_access），生成的归档文件不仅包含专辑中的所有照片，还可能包

CVSS 8.2 · High EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
LycheeOrg Lychee < 7.6.3 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-61838

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Lychee: Album password bypass in ZIP downloads
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
LycheeOrg Lychee < 7.6.3 -

II. Public POCs for CVE-2026-61838

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-61838

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-61838 (3)

Vendor Advisories for CVE-2026-61838 (1)

Same Patch Batch · LycheeOrg · 2026-10-15 · 10 CVEs total

CVE-2026-62679 8.9 HIGH Lychee: Path traversal in `SecurePathController` allows authenticated arbitrary file read
CVE-2026-77470 8.3 HIGH Lychee: Webshop checkout lets the client override the payment `amount` sent to the gateway
CVE-2026-77466 8.3 HIGH Lychee: Webshop payment bypass via unrestricted "Dummy" gateway selection
CVE-2026-61611 7.5 HIGH Lychee: Missing rate limiting on album password unlock endpoint allows brute-force attacks
CVE-2026-77467 7.1 HIGH Lychee: A single 383-byte PDF causes ~184 seconds of CPU consumption in the real processin
CVE-2026-77468 6.9 MEDIUM Lychee: Missing Authentication for Critical Function and Allocation of Resources Without L
CVE-2026-57568 5.7 MEDIUM Lychee: Stored XSS via Markdown javascript: Links in Photo and Album Descriptions (Gallery
CVE-2026-57569 2.3 LOW Lychee: Distinct post-fix SSRF variant in Photo::fromUrl due to missing IP pinning after D
CVE-2026-61610 2.3 LOW Lychee: unauthenticated photo starring reveals existence of private photos when photos_sta

IV. Related Vulnerabilities

Same product: Lychee
Same vendor: LycheeOrg
Same weakness: CWE-285

V. Comments for CVE-2026-61838

No comments yet

Leave a comment