UBUNTU-CVE-2026-9546
- Source
- https://ubuntu.com/security/CVE-2026-9546
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9546.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-9546
- Upstream
- Withdrawn
- 2026-06-30T01:55:01Z
- Published
- 2026-06-24T14:00:00Z
- Modified
- 2026-06-30T03:45:07.198720622Z
- Severity
-
- Ubuntu - low
- Summary
- [none]
- Details
-
A vulnerability in libcurl caused the HTTP
Referer:header to persist even when explicitly cleared. While the documentation states that passing NULL toCURLOPT_REFERERsuppresses the header, the option failed to clear the internal state. As a result, the previous referrer string was erroneously reused and sent in subsequent requests, potentially leaking sensitive information to unintended servers. - 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 affected
Affected versions
8.*
8.14.1-2ubuntu1
8.17.0-1ubuntu1
8.18.0-1ubuntu1
8.18.0-1ubuntu2
8.18.0-1ubuntu2.1
Ecosystem specific
{
"binaries": [
{
"binary_name": "curl",
"binary_version": "8.18.0-1ubuntu2.1"
},
{
"binary_name": "libcurl3t64-gnutls",
"binary_version": "8.18.0-1ubuntu2.1"
},
{
"binary_name": "libcurl4t64",
"binary_version": "8.18.0-1ubuntu2.1"
}
],
"priority_reason": "Upstream defined this as low severity"
}