A flaw was found in libcurl. An application using libcurl that performs an authenticated HTTP(S) request after a Negotiate-authenticated one to the same host may incorrectly reuse the previous connection. This authentication bypass vulnerability allows the second request to be sent over a connection authenticated with different credentials, potentially leading to unauthorized access or information disclosure.
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| Vendors | Products |
|---|---|
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Curl
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Libcurl
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Fixes
Solution
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References
History
Fri, 01 May 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Curl
Curl libcurl |
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| Vendors & Products |
Curl
Curl libcurl |
Fri, 01 May 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in libcurl. An application using libcurl that performs an authenticated HTTP(S) request after a Negotiate-authenticated one to the same host may incorrectly reuse the previous connection. This authentication bypass vulnerability allows the second request to be sent over a connection authenticated with different credentials, potentially leading to unauthorized access or information disclosure. | |
| Title | curl: libcurl: Authentication bypass due to incorrect HTTP Negotiate connection reuse | |
| Weaknesses | CWE-488 | |
| References |
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| Metrics |
threat_severity
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cvssV3_1
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Projects
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MITRE
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Vulnrichment
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NVD
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Redhat
OpenCVE Enrichment
Updated: 2026-05-01T01:30:05Z
Weaknesses