---
id: CVE-2026-77468
title: 'Lychee is a free, open-source photo-management tool'
summary: >-
  Lychee is a free, open-source photo-management tool. Prior to 7.7.0, GET
  /docs/api exposes the Scramble-generated OpenAPI documentation configured by
  config/scramble.php to unauthenticated callers after installation, with
  observed respon…
severity: medium
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'
cwe:
  - CWE-770
vendor: LycheeOrg
product: Lychee
affected:
  - Lychee < 7.7.0
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T17:17:27.860'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77468'
references:
  - url: >-
      https://github.com/LycheeOrg/Lychee/commit/711f4290f53cd980cd5baa2434c734d364e9fe33
    label: security-advisories@github.com
  - url: 'https://github.com/LycheeOrg/Lychee/pull/4510'
    label: security-advisories@github.com
  - url: 'https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-xg8r-4pm3-2h4f
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-15T17:18:20.101Z'
---

## Overview

Lychee is a free, open-source photo-management tool. Prior to 7.7.0, GET /docs/api exposes the Scramble-generated OpenAPI documentation configured by config/scramble.php to unauthenticated callers after installation, with observed response size and latency suggesting that the schema is regenerated without an application-level cache. A remote attacker can repeatedly request the unthrottled route to consume server CPU and obtain a detailed map of the API surface and parameter schema. This issue is fixed in version 7.7.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.