CVE-2026-11856

N/A Unknown
Published: July 03, 2026 Modified: July 03, 2026
View on NVD

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`.

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References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://curl.se/docs/CVE-2026-11856.html
Source: 2499f714-1537-4658-8207-48ae4bb9eae9
https://curl.se/docs/CVE-2026-11856.json
Source: 2499f714-1537-4658-8207-48ae4bb9eae9
https://hackerone.com/reports/3793260
Source: 2499f714-1537-4658-8207-48ae4bb9eae9

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
N/A / 10.0
EPSS (Exploit Probability)
0.2%
16th percentile
Exploitation Status
Not in CISA KEV