Administrator username enumeration via password-verification timing
Published Jun 10, 2026 · Updated Jun 10, 2026
Observable timing differences in Shopware 6.6.10.17 and earlier and 6.7.0.0 through 6.7.10.0 allow remote attackers to enumerate admin usernames. The getUserEntityByUserCredentials method in UserRepository.php returns immediately for an unknown username but runs password_verify for an existing user, producing a measurable response-time gap. The unauthenticated OAuth token endpoint reveals only whether a tested administrator username exists, enabling targeted credential attacks.
Summary
What happened
Observable timing differences in Shopware 6.6.10.17 and earlier and 6.7.0.0 through 6.7.10.0 allow remote attackers to enumerate admin usernames. The getUserEntityByUserCredentials method in UserRepository.php returns immediately for an unknown username but runs password_verify for an existing user, producing a measurable response-time gap. The unauthenticated OAuth token endpoint reveals only whether a tested administrator username exists, enabling targeted credential attacks.
The record
- CVE
- CVE-2026-48011
- Published
- Jun 10, 2026
- Updated
- Jun 10, 2026
- Vendor
- Shopware
- Product
- Shopware
- Classifications
- CWE-208, CAPEC-541, CAPEC-580, CAPEC-462, T1589.003
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 10, 2026CVE publishedPublication date reported by the CVE source.
- Jun 10, 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=< 6.6.10.18
- Affected versionversion=>= 6.7.0.0, < 6.7.10.1
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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