hostname using Negotiate authentication, when the initial request is done
using empty credentials. This can make user B's request get sent over user A's
previously authenticated connection.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| curl | curl | unaffected |
|
No data.
No data.
OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.
| Vendors | Products |
|---|---|
|
Curl
Subscribe
|
Curl
Subscribe
|
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Sun, 06 Sep 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Curl
Curl curl |
|
| Weaknesses | CWE-269 CWE-668 |
|
| Vendors & Products |
Curl
Curl curl |
Sun, 06 Sep 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection. | |
| Title | Negotiate ambient user conn reuse | |
| References |
|
Projects
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MITRE
Status: PUBLISHED
Assigner: curl
Published:
Updated: 2026-09-06T17:47:43.523Z
Reserved: 2026-08-15T10:35:02.789Z
Link: CVE-2026-19931
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-06T18:17:20.733
Modified: 2026-09-06T18:17:20.733
Link: CVE-2026-19931
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-09-06T19:30:11Z