When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the…
Medium CVSS 5.3
Summary
When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the hostname that the first request is redirected to has information in the used .netrc file, with either of the `machine` or `default` keywords, curl would pass on the bearer token set for the first host also to the second one.
In-depth triage
No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).
Affected products
- :
Sources
- NVD DATABASE
Original Links
- https://curl.se/docs/CVE-2026-3783.html Patch
- https://curl.se/docs/CVE-2026-3783.json Vendor Advisory
- https://hackerone.com/reports/3583983 Exploit
- http://www.openwall.com/lists/oss-security/2026/03/11/2 Mailing List
Timeline
- nvd_ingest NVD