CVE-2026-3783
Description
When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transferperforms a redirect to a second URL, curl could leak that token to the secondhostname under some circumstances.If the hostname that the first request is redirected to has information in theused .netrc file, with either of the machine or default keywords, curlwould pass on the bearer token set for the first host also to the second one.
Risk Information
Base Score
5.3
MODERATE
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score
Exploitation Probability
0.021
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Vulnerabilities CVE-2026-3805,CVE-2026-3784,CVE-2026-3783,CVE-2026-1965 are fixed in Curl For Windows 8.19.0 | Windows |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234