Unauthenticated payment bypass via omitted price field
Published Sep 2, 2026 · Updated Sep 2, 2026
Payment bypass in Metagauss RegistrationMagic before 6.0.9.9 allows remote attackers to activate paid registrations without payment. The paid-registration submission handler accepts an omitted total-price field instead of recalculating and validating the amount server-side. No authentication is required, and the resulting impact is limited to an activated account and avoidance of the configured registration charge.
Summary
What happened
Payment bypass in Metagauss RegistrationMagic before 6.0.9.9 allows remote attackers to activate paid registrations without payment. The paid-registration submission handler accepts an omitted total-price field instead of recalculating and validating the amount server-side. No authentication is required, and the resulting impact is limited to an activated account and avoidance of the configured registration charge.
The record
- CVE
- CVE-2026-77793
- Published
- Sep 2, 2026
- Updated
- Sep 2, 2026
- Vendor
- EventPrime Events
- Product
- RegistrationMagic
- Classifications
- CWE-602, T1136
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 2, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 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.
- Affected versionversion=0 <6.0.9.9
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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