All vulnerabilities

Servers and applications

CVE-2026-3783

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…

Severity
Medium 5.3
Published
11 Mar 2026
Last changed
15 Sept 2026
Added to UpHeron
21 Oct 2026
Fixed in
8.19.0
Sources
NVD

Affected software

SoftwareAffected versions
curlServers and applications · cpe:a:haxx:curl
  • From 7.33.0 before 8.19.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-3783
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-3783