CVE-2026-8458
libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services". libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Modified - 2499f714-1537-4658-8207-48ae4bb9eae9
- Published
- 2026-07-03
- Last modified
- 2026-09-15
- Weaknesses
- CWE-488
Affected products
References
- https://curl.se/docs/CVE-2026-8458.html
- https://curl.se/docs/CVE-2026-8458.json
- https://hackerone.com/reports/3721183
