Guest PII disclosure via unchecked address IDs
Published Feb 6, 2026 · Updated Feb 6, 2026
IDOR in Spree Commerce guest checkout allows remote attackers to read other guests' names, addresses, and phone numbers. The checkout update path permits plain bill_address_id and ship_address_id parameters, skips validate_address_ownership for them, and accepts guest addresses because both user IDs are nil. A guest cart, its order token, a valid CSRF token and session cookie, and an existing victim address ID are required; sequential IDs enable enumeration and PII disclosure.
Summary
What happened
IDOR in Spree Commerce guest checkout allows remote attackers to read other guests' names, addresses, and phone numbers. The checkout update path permits plain bill_address_id and ship_address_id parameters, skips validate_address_ownership for them, and accepts guest addresses because both user IDs are nil. A guest cart, its order token, a valid CSRF token and session cookie, and an existing victim address ID are required; sequential IDs enable enumeration and PII disclosure.
The record
- CVE
- CVE-2026-25758
- Published
- Feb 6, 2026
- Updated
- Feb 6, 2026
- Vendor
- Spree Commerce
- Product
- Spree Commerce
- Classifications
- CWE-639, CWE-284, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 6, 2026CVE publishedPublication date reported by the CVE source.
- Feb 6, 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=< 4.10.3
- Affected versionversion=>= 5.0.0, < 5.0.8
- Affected versionversion=>= 5.1.0.beta, < 5.1.10
- Affected versionversion=>= 5.2.0.rc1, < 5.2.7
- Affected versionversion=>= 5.3.0.rc2, < 5.3.2
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
- Guest checkout address-ID proof of conceptfunctional · demonstrated
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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