UBUNTU-CVE-2026-11564

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2026-11564
Downstream
USN-8525-1
Published: 24 Jun 2026, 14:00
Last modified:11 Jul 2026, 00:15

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.1 CRITICAL
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Jun 2026, 14:00
Published
Vulnerability first disclosed
11 Jul 2026, 00:15
Last Modified
Vulnerability information updated

Description

libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. An easy handle that first uses default native CA trust can continue trusting the native platform store after the application switches that same handle to custom CA material for a later transfer.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Systems

  • ubuntu•curl

    all | < 8.18.0-1ubuntu2.3

References (4)