---
id: CVE-2026-77466
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, Lychee
  hides the Omnipay Dummy test provider from the checkout options in production
  through OmnipayFactory::get_supported_providers(), but CreateSessionRequest
  validat…
severity: high
cvss: 8.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-20
  - CWE-184
vendor: LycheeOrg
product: Lychee
affected:
  - Lychee < 7.7.0
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T18:17:28.860'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77466'
references:
  - url: >-
      https://github.com/LycheeOrg/Lychee/commit/8b73656f920c682862b9199acc87fbaf72ee5a90
    label: security-advisories@github.com
  - url: 'https://github.com/LycheeOrg/Lychee/pull/4507'
    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-5wh2-hg7q-6hv3
    label: security-advisories@github.com
  - url: >-
      https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-5wh2-hg7q-6hv3
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-15T17:56:39.359165Z'
cvssSource: cna
ingestedAt: '2026-10-15T17:18:20.100Z'
---

## Overview

Lychee is a free, open-source photo-management tool. Prior to 7.7.0, Lychee hides the Omnipay Dummy test provider from the checkout options in production through OmnipayFactory::get_supported_providers(), but CreateSessionRequest validates only that the submitted provider is an OmnipayProviderType and does not enforce OmnipayProviderType::isAllowed(). A buyer, including a guest when webshop_allow_guest_checkout is enabled, can submit Dummy directly and complete the test gateway flow without a real payment. When webshop_auto_fulfill_enabled is enabled, OrderCompletedListener::fullfillOrder() can then release the purchasable item. The issue requires access to the Supporter or Pro webshop and an enabled purchasable item. Testing bypassed the closed-source license middleware, so whether the real license layer performs additional payment-provider validation remains unverified. The payment finalize status check itself is not the root cause. This issue is fixed in version 7.7.0.

## Remediation

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