CVE-2026-77470
- Source
- https://cve.org/CVERecord?id=CVE-2026-77470
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77470.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-77470
- Aliases
-
- GHSA-476v-jr53-8rxc
- Published
- 2026-10-15T16:36:09Z
- Modified
- 2026-10-28T02:30:49Z
- Severity
-
- 8.3 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- Lychee: Webshop checkout lets the client override the payment `amount` sent to the gateway via malicious crafted POST request
- Details
-
Lychee is a free, open-source photo-management tool. Prior to 7.7.1, the Supporter or Pro webshop POST /api/v2/Shop/Checkout/Process flow accepts an unrestricted additional_data array and CheckoutService::preparePurchaseParameters() merges it after server-computed purchase parameters. Because later string keys overwrite earlier keys, an unauthenticated buyer can replace amount, currency, returnUrl, cancelUrl, or transactionId before CheckoutService::processPayment() passes the parameters to a non-PayPal Omnipay gateway. An attacker can therefore make a gateway accept a successful payment for an attacker-selected amount and obtain auto-fulfilled goods while underpaying the merchant. The issue requires an enabled webshop, a purchasable item, and an affected Omnipay gateway. This issue is fixed in version 7.7.1.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-20", "CWE-472", "CWE-915" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77470.json" }- References
-
- https://github.com/LycheeOrg/Lychee/releases/tag/v7.7.1
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77470.json
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-476v-jr53-8rxc
- https://nvd.nist.gov/vuln/detail/CVE-2026-77470
- https://github.com/LycheeOrg/Lychee/commit/24e6e11f1da131ed20b192d7d7b7ca9084451a2f
- https://github.com/LycheeOrg/Lychee/pull/4514
Affected packages
Git / github.com/lycheeorg/lychee
Affected ranges
- Type
- GIT
- Repo
- https://github.com/lycheeorg/lychee
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "7.7.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "24e6e11f1da131ed20b192d7d7b7ca9084451a2f" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v7.7.1", "range": [ { "fixed": "24e6e11f1da131ed20b192d7d7b7ca9084451a2f" } ], "source": "REFERENCES_TAG" }, { "range": [ { "introduced": "0" }, { "fixed": "7.7.1" } ], "source": "DESCRIPTION" } ] }