--- title: "Lychee - Broken Access Control" description: "Lychee < 7.7.1 contains a broken access control vulnerability caused by unrestricted additional_data array merging in the webshop checkout process, letting unauthenticated buyers manipulate payment parameters to underpay, exploit requires enabled webshop, purchasable item, and affected Omnipay gateway." url: https://panop.io/threat-heartbeat/CVE-2026-77470/ --- # CVE-2026-77470 Lychee - Broken Access Control Lychee < 7.7.1 contains a broken access control vulnerability caused by unrestricted additional\_data array merging in the webshop checkout process, letting unauthenticated buyers manipulate payment parameters to underpay, exploit requires enabled webshop, purchasable item, and affected Omnipay gateway. CVSS base score 8.3 /10 High CISA KEV Not listed Public exploit None known Authentication Not required [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-77470) ## Details Type Broken Access Control Impact Broken Access Control CVSS vector 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/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-20](https://cwe.mitre.org/data/definitions/20.html) ## Vendor fix Update to version 7.7.1 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-2026-77470](https://nvd.nist.gov/vuln/detail/CVE-2026-77470) - [https://github.com/LycheeOrg/Lychee/commit/24e6e11f1da131ed20b192d7d7b7ca9084451a2f](https://github.com/LycheeOrg/Lychee/commit/24e6e11f1da131ed20b192d7d7b7ca9084451a2f) - [https://github.com/LycheeOrg/Lychee/pull/4514](https://github.com/LycheeOrg/Lychee/pull/4514) - [https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.1](https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.1) - [https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-476v-jr53-8rxc](https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-476v-jr53-8rxc) [← All CVEs](https://panop.io/threat-heartbeat/) ## 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 Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)