An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the `CURLOPT_POSTFIELDS` option has been set, if the same handle previously wasused to issue a `PUT` request which used that callback. This flaw may surprise the application and cause it to misbehave and either send off the wrong data or use memory after free or similar in the second transfer. The problem exists in the logic for a reused handle when it is (expected to be) changed from a PUT to a POST.
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Affected Vendors & Products
References
History
Fri, 13 Feb 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
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ssvc
|
Status: PUBLISHED
Assigner: hackerone
Published:
Updated: 2026-02-13T19:43:18.938Z
Reserved: 2023-03-14T00:00:00.000Z
Link: CVE-2023-28322
Updated: 2024-08-02T12:38:25.091Z
Status : Modified
Published: 2023-05-26T21:15:16.153
Modified: 2026-02-13T20:16:15.183
Link: CVE-2023-28322