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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-11856

cross-origin Digest auth state leak

Description

Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

curl curl

Default version status: unaffected

  • 7.10.6 to < 8.14.2affected
  • 8.15.0 to < 8.16.1affected
  • 8.17.0 to < 8.20.1affected

curl curl

Default version status: unaffected

  • 334d78cd18a7310144383929bdcef34ffbf6159b to < 5c6b4880357ab3e72967c1c45cae0f96ffabc535affected

curl curl

Default version status: unaffected

  • 8.20.0affected
  • 8.19.0affected
  • 8.18.0affected
  • 8.17.0affected
  • 8.16.0affected
  • 8.15.0affected
  • 8.14.1affected
  • 8.14.0affected
  • 8.13.0affected
  • 8.12.1affected
  • 8.12.0affected
  • 8.11.1affected
  • 8.11.0affected
  • 8.10.1affected
  • 8.10.0affected
  • 8.9.1affected
  • 8.9.0affected
  • 8.8.0affected
  • 8.7.1affected
  • 8.7.0affected
  • 8.6.0affected
  • 8.5.0affected
  • 8.4.0affected
  • 8.3.0affected
  • 8.2.1affected
  • 8.2.0affected
  • 8.1.2affected
  • 8.1.1affected
  • 8.1.0affected
  • 8.0.1affected
  • 8.0.0affected
  • 7.88.1affected
  • 7.88.0affected
  • 7.87.0affected
  • 7.86.0affected
  • 7.85.0affected
  • 7.84.0affected
  • 7.83.1affected
  • 7.83.0affected
  • 7.82.0affected
  • 7.81.0affected
  • 7.80.0affected
  • 7.79.1affected
  • 7.79.0affected
  • 7.78.0affected
  • 7.77.0affected
  • 7.76.1affected
  • 7.76.0affected
  • 7.75.0affected
  • 7.74.0affected
  • 7.73.0affected
  • 7.72.0affected
  • 7.71.1affected
  • 7.71.0affected
  • 7.70.0affected
  • 7.69.1affected
  • 7.69.0affected
  • 7.68.0affected
  • 7.67.0affected
  • 7.66.0affected
  • 7.65.3affected
  • 7.65.2affected
  • 7.65.1affected
  • 7.65.0affected
  • 7.64.1affected
  • 7.64.0affected
  • 7.63.0affected
  • 7.62.0affected
  • 7.61.1affected
  • 7.61.0affected
  • 7.60.0affected
  • 7.59.0affected
  • 7.58.0affected
  • 7.57.0affected
  • 7.56.1affected
  • 7.56.0affected
  • 7.55.1affected
  • 7.55.0affected
  • 7.54.1affected
  • 7.54.0affected
  • 7.53.1affected
  • 7.53.0affected
  • 7.52.1affected
  • 7.52.0affected
  • 7.51.0affected
  • 7.50.3affected
  • 7.50.2affected
  • 7.50.1affected
  • 7.50.0affected
  • 7.49.1affected
  • 7.49.0affected
  • 7.48.0affected
  • 7.47.1affected
  • 7.47.0affected
  • 7.46.0affected
  • 7.45.0affected
  • 7.44.0affected
  • 7.43.0affected
  • 7.42.1affected
  • 7.42.0affected
  • 7.41.0affected
  • 7.40.0affected
  • 7.39.0affected
  • 7.38.0affected
  • 7.37.1affected
  • 7.37.0affected
  • 7.36.0affected
  • 7.35.0affected
  • 7.34.0affected
  • 7.33.0affected
  • 7.32.0affected
  • 7.31.0affected
  • 7.30.0affected
  • 7.29.0affected
  • 7.28.1affected
  • 7.28.0affected
  • 7.27.0affected
  • 7.26.0affected
  • 7.25.0affected
  • 7.24.0affected
  • 7.23.1affected
  • 7.23.0affected
  • 7.22.0affected
  • 7.21.7affected
  • 7.21.6affected
  • 7.21.5affected
  • 7.21.4affected
  • 7.21.3affected
  • 7.21.2affected
  • 7.21.1affected
  • 7.21.0affected
  • 7.20.1affected
  • 7.20.0affected
  • 7.19.7affected
  • 7.19.6affected
  • 7.19.5affected
  • 7.19.4affected
  • 7.19.3affected
  • 7.19.2affected
  • 7.19.1affected
  • 7.19.0affected
  • 7.18.2affected
  • 7.18.1affected
  • 7.18.0affected
  • 7.17.1affected
  • 7.17.0affected
  • 7.16.4affected
  • 7.16.3affected
  • 7.16.2affected
  • 7.16.1affected
  • 7.16.0affected
  • 7.15.5affected
  • 7.15.4affected
  • 7.15.3affected
  • 7.15.2affected
  • 7.15.1affected
  • 7.15.0affected
  • 7.14.1affected
  • 7.14.0affected
  • 7.13.2affected
  • 7.13.1affected
  • 7.13.0affected
  • 7.12.3affected
  • 7.12.2affected
  • 7.12.1affected
  • 7.12.0affected
  • 7.11.2affected
  • 7.11.1affected
  • 7.11.0affected
  • 7.10.8affected
  • 7.10.7affected
  • 7.10.6affected

References