CVE-2026-77466Public exploitNetwork attack vectorHinoki check available

Payment bypass via unchecked test-gateway selection

Published Oct 15, 2026 · Updated Oct 15, 2026

Payment bypass in Lychee before 7.7.0 allows remote attackers to obtain webshop items without paying via the Dummy test gateway. CreateSessionRequest accepts provider enum values without enforcing OmnipayProviderType::isAllowed(), leaving production restrictions in the checkout options only. Exploitation requires an accessible Supporter or Pro webshop and a purchasable item; guest checkout permits unauthenticated buyers, automatic fulfillment releases items when enabled, and additional license-layer validation remains unverified because testing bypassed that middleware.

CVSS severity8.3
High
EPSS probability0.44%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Payment bypass in Lychee before 7.7.0 allows remote attackers to obtain webshop items without paying via the Dummy test gateway. CreateSessionRequest accepts provider enum values without enforcing OmnipayProviderType::isAllowed(), leaving production restrictions in the checkout options only. Exploitation requires an accessible Supporter or Pro webshop and a purchasable item; guest checkout permits unauthenticated buyers, automatic fulfillment releases items when enabled, and additional license-layer validation remains unverified because testing bypassed that middleware.

The record

CVE
CVE-2026-77466
Published
Oct 15, 2026
Updated
Oct 15, 2026
Vendor
LycheeOrg
Product
Lychee
Classifications
CWE-184, CWE-20
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 7.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LycheeOrg · Lycheeversion=< 7.7.0

Published CVSS scores

8.3GitHubCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-184Incomplete List of Disallowed Inputs
CWE-20Improper Input Validation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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