Fiber is an Express inspired web framework written in Go. Prior to 3.3.0, the default Authorizer function in the BasicAuth middleware in middleware/basicauth/config.go uses short-circuit evaluation that skips password hash comparison for non-existent usernames, enabling reliable remote username enumeration through response timing differences. This issue is fixed in version 3.3.0.
Metrics
Affected Vendors & Products
References
History
Thu, 09 Jul 2026 16:30:00 +0000
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ssvc
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Wed, 08 Jul 2026 20:45:00 +0000
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Gofiber
Gofiber fiber |
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| Vendors & Products |
Gofiber
Gofiber fiber |
Wed, 08 Jul 2026 19:45:00 +0000
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| Description | Fiber is an Express inspired web framework written in Go. Prior to 3.3.0, the default Authorizer function in the BasicAuth middleware in middleware/basicauth/config.go uses short-circuit evaluation that skips password hash comparison for non-existent usernames, enabling reliable remote username enumeration through response timing differences. This issue is fixed in version 3.3.0. | |
| Title | Fiber: Username Enumeration via Timing Oracle in BasicAuth Default Authorizer | |
| Weaknesses | CWE-203 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-07-08T19:32:15.113Z
Updated: 2026-07-09T14:33:29.004Z
Reserved: 2026-05-05T19:52:59.146Z
Link: CVE-2026-44332
Updated: 2026-07-09T14:33:26.233Z
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