Medium6.5Red Hat & Ubuntu Linux Updated
Information disclosure via incorrect Digest authentication header reuse
CVE-2026-11856 Published Jul 3, 2026Updated by vendor Jul 3, 2026
CVE-2026-11856
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Information disclosure via incorrect Digest authentication header reuse. Red Hat rates this moderate (CVSS 6.5). Weakness: CWE-201. Affected package(s): rust-main. Resolved in Red Hat advisory RHSA-2026:34975 — update the affected packages (`sudo dnf update`).
Affected versions
- rust-main-1.96.1-1.hum1
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
- RHSA-2026:34975
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Correct usage of the library: Create a fresh handle for a different origin, or explicitly clear authentication-related state before reuse: ```c // req.A curl = curl_easy_init(); ... curl_easy_cleanup(curl); // req.B curl = curl_easy_init(); ... curl_easy_cleanup(curl); ``` Fixed in libcurl 8.21.0; affected range: 7.10.6 – 8.20.0
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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