CVEvulnerability
CVE-2026-8458
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2026-07-03
- Last modified
- 2026-09-15
- Assigner
- 2499f714-1537-4658-8207-48ae4bb9eae9
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-488
Description
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.
Affected configurations
• haxx curl (>= 7.46.0 < 8.20.0)
Related
Weakness · CWE (1)
- CWE-488 Exposure of Data Element to Wrong Session weakness
References
- https://curl.se/docs/CVE-2026-8458.html Patch, Vendor Advisory
- https://curl.se/docs/CVE-2026-8458.json Vendor Advisory
- https://hackerone.com/reports/3721183 Exploit, Issue Tracking, Third Party Advisory
- https://hackerone.com/reports/3721183 Exploit, Issue Tracking, Third Party Advisory