---
title: "Lychee - Authorization Bypass"
description: "Lychee < 7.6.3 contains an authorization bypass caused by missing access enforcement in album and photo archive downloads, letting unauthenticated attackers download protected album ZIP archives, exploit requires knowledge of shared album identifier."
url: https://panop.io/threat-heartbeat/CVE-2026-61838/
---

# CVE-2026-61838 Lychee - Authorization Bypass

Lychee < 7.6.3 contains an authorization bypass caused by missing access enforcement in album and photo archive downloads, letting unauthenticated attackers download protected album ZIP archives, exploit requires knowledge of shared album identifier.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-61838)

## Details

Type

Broken Access Control

Impact

Information Disclosure, File System Read

CVSS 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/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

Published

15 October 2026

Updated

16 October 2026

Weakness

[CWE-285](https://cwe.mitre.org/data/definitions/285.html)

## Vendor fix

Update to version 7.6.3 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-61838](https://nvd.nist.gov/vuln/detail/CVE-2026-61838)
- [https://github.com/LycheeOrg/Lychee/commit/4366dd0e721126dffe29659afec93aee9c1db711](https://github.com/LycheeOrg/Lychee/commit/4366dd0e721126dffe29659afec93aee9c1db711)
- [https://github.com/LycheeOrg/Lychee/pull/4459](https://github.com/LycheeOrg/Lychee/pull/4459)
- [https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.3](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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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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