UBUNTU-CVE-2026-11352
- Source
- https://ubuntu.com/security/CVE-2026-11352
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11352.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-11352
- Upstream
- Downstream
- Related
- Published
- 2026-06-24T14:00:00Z
- Modified
- 2026-07-11T00:15:10.227240711Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Ubuntu - low
- Summary
- [none]
- Details
-
An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can continuously stream empty datagrams to indefinitely stall the client.
- References
Affected packages
Ubuntu:26.04:LTS / curl
Package
- Name
- curl
- Purl
- pkg:deb/ubuntu/curl?arch=source&distro=resolute
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed8.18.0-1ubuntu2.3
Affected versions
8.*
8.14.1-2ubuntu1
8.17.0-1ubuntu1
8.18.0-1ubuntu1
8.18.0-1ubuntu2
8.18.0-1ubuntu2.1
8.18.0-1ubuntu2.2
Ecosystem specific
{
"priority_reason": "Upstream defined this as low severity",
"binaries": [
{
"binary_version": "8.18.0-1ubuntu2.3",
"binary_name": "curl"
},
{
"binary_version": "8.18.0-1ubuntu2.3",
"binary_name": "libcurl3t64-gnutls"
},
{
"binary_version": "8.18.0-1ubuntu2.3",
"binary_name": "libcurl4t64"
}
],
"availability": "No subscription required"
}