UBUNTU-CVE-2026-3784
- Source
- https://ubuntu.com/security/CVE-2026-3784
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-3784.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-3784
- Upstream
- Downstream
- Related
- Published
- 2026-03-11T18:00:00Z
- Modified
- 2026-03-19T08:33:24.296154Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
- Ubuntu - low
- Summary
- [none]
- Details
-
curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection.
- References
Affected packages
Ubuntu:Pro:18.04:LTS / curl
Package
- Name
- curl
- Purl
- pkg:deb/ubuntu/curl@7.58.0-2ubuntu3.24+esm8?arch=source&distro=esm-infra/bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed7.58.0-2ubuntu3.24+esm8
Affected versions
7.*
7.55.1-1ubuntu2
7.55.1-1ubuntu2.1
7.57.0-1ubuntu1
7.58.0-2ubuntu1
7.58.0-2ubuntu2
7.58.0-2ubuntu3
7.58.0-2ubuntu3.1
7.58.0-2ubuntu3.2
7.58.0-2ubuntu3.3
7.58.0-2ubuntu3.5
7.58.0-2ubuntu3.6
7.58.0-2ubuntu3.7
7.58.0-2ubuntu3.8
7.58.0-2ubuntu3.9
7.58.0-2ubuntu3.10
7.58.0-2ubuntu3.12
7.58.0-2ubuntu3.13
7.58.0-2ubuntu3.14
7.58.0-2ubuntu3.15
7.58.0-2ubuntu3.16
7.58.0-2ubuntu3.17
7.58.0-2ubuntu3.18
7.58.0-2ubuntu3.19
7.58.0-2ubuntu3.20
7.58.0-2ubuntu3.21
7.58.0-2ubuntu3.22
7.58.0-2ubuntu3.23
7.58.0-2ubuntu3.24
7.58.0-2ubuntu3.24+esm1
7.58.0-2ubuntu3.24+esm2
7.58.0-2ubuntu3.24+esm3
7.58.0-2ubuntu3.24+esm4
7.58.0-2ubuntu3.24+esm5
7.58.0-2ubuntu3.24+esm7
Ecosystem specific
{
"priority_reason": "Upstream defined it as low",
"binaries": [
{
"binary_name": "curl",
"binary_version": "7.58.0-2ubuntu3.24+esm8"
},
{
"binary_name": "libcurl3-gnutls",
"binary_version": "7.58.0-2ubuntu3.24+esm8"
},
{
"binary_name": "libcurl3-nss",
"binary_version": "7.58.0-2ubuntu3.24+esm8"
},
{
"binary_name": "libcurl4",
"binary_version": "7.58.0-2ubuntu3.24+esm8"
},
{
"binary_name": "libcurl4-gnutls-dev",
"binary_version": "7.58.0-2ubuntu3.24+esm8"
},
{
"binary_name": "libcurl4-nss-dev",
"binary_version": "7.58.0-2ubuntu3.24+esm8"
},
{
"binary_name": "libcurl4-openssl-dev",
"binary_version": "7.58.0-2ubuntu3.24+esm8"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Ubuntu:Pro:20.04:LTS / curl
Package
- Name
- curl
- Purl
- pkg:deb/ubuntu/curl@7.68.0-1ubuntu2.25+esm3?arch=source&distro=esm-infra/focal
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed7.68.0-1ubuntu2.25+esm3
Affected versions
7.*
7.65.3-1ubuntu3
7.65.3-1ubuntu4
7.66.0-1ubuntu1
7.67.0-2ubuntu1
7.68.0-1ubuntu1
7.68.0-1ubuntu2
7.68.0-1ubuntu2.1
7.68.0-1ubuntu2.2
7.68.0-1ubuntu2.4
7.68.0-1ubuntu2.5
7.68.0-1ubuntu2.6
7.68.0-1ubuntu2.7
7.68.0-1ubuntu2.10
7.68.0-1ubuntu2.11
7.68.0-1ubuntu2.12
7.68.0-1ubuntu2.13
7.68.0-1ubuntu2.14
7.68.0-1ubuntu2.15
7.68.0-1ubuntu2.16
7.68.0-1ubuntu2.18
7.68.0-1ubuntu2.19
7.68.0-1ubuntu2.20
7.68.0-1ubuntu2.21
7.68.0-1ubuntu2.22
7.68.0-1ubuntu2.23
7.68.0-1ubuntu2.24
7.68.0-1ubuntu2.25
7.68.0-1ubuntu2.25+esm2
Ecosystem specific
{
"priority_reason": "Upstream defined it as low",
"binaries": [
{
"binary_name": "curl",
"binary_version": "7.68.0-1ubuntu2.25+esm3"
},
{
"binary_name": "libcurl3-gnutls",
"binary_version": "7.68.0-1ubuntu2.25+esm3"
},
{
"binary_name": "libcurl3-nss",
"binary_version": "7.68.0-1ubuntu2.25+esm3"
},
{
"binary_name": "libcurl4",
"binary_version": "7.68.0-1ubuntu2.25+esm3"
},
{
"binary_name": "libcurl4-gnutls-dev",
"binary_version": "7.68.0-1ubuntu2.25+esm3"
},
{
"binary_name": "libcurl4-nss-dev",
"binary_version": "7.68.0-1ubuntu2.25+esm3"
},
{
"binary_name": "libcurl4-openssl-dev",
"binary_version": "7.68.0-1ubuntu2.25+esm3"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
Ubuntu:22.04:LTS / curl
Package
- Name
- curl
- Purl
- pkg:deb/ubuntu/curl@7.81.0-1ubuntu1.23?arch=source&distro=jammy
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed7.81.0-1ubuntu1.23
Affected versions
7.*
7.74.0-1.3ubuntu2
7.74.0-1.3ubuntu3
7.80.0-3
7.81.0-1
7.81.0-1ubuntu1.1
7.81.0-1ubuntu1.2
7.81.0-1ubuntu1.3
7.81.0-1ubuntu1.4
7.81.0-1ubuntu1.6
7.81.0-1ubuntu1.7
7.81.0-1ubuntu1.8
7.81.0-1ubuntu1.10
7.81.0-1ubuntu1.11
7.81.0-1ubuntu1.13
7.81.0-1ubuntu1.14
7.81.0-1ubuntu1.15
7.81.0-1ubuntu1.16
7.81.0-1ubuntu1.17
7.81.0-1ubuntu1.18
7.81.0-1ubuntu1.19
7.81.0-1ubuntu1.20
7.81.0-1ubuntu1.21
7.81.0-1ubuntu1.22
Ecosystem specific
{
"priority_reason": "Upstream defined it as low",
"binaries": [
{
"binary_name": "curl",
"binary_version": "7.81.0-1ubuntu1.23"
},
{
"binary_name": "libcurl3-gnutls",
"binary_version": "7.81.0-1ubuntu1.23"
},
{
"binary_name": "libcurl3-nss",
"binary_version": "7.81.0-1ubuntu1.23"
},
{
"binary_name": "libcurl4",
"binary_version": "7.81.0-1ubuntu1.23"
},
{
"binary_name": "libcurl4-gnutls-dev",
"binary_version": "7.81.0-1ubuntu1.23"
},
{
"binary_name": "libcurl4-nss-dev",
"binary_version": "7.81.0-1ubuntu1.23"
},
{
"binary_name": "libcurl4-openssl-dev",
"binary_version": "7.81.0-1ubuntu1.23"
}
],
"availability": "No subscription required"
}
Ubuntu:24.04:LTS / curl
Package
- Name
- curl
- Purl
- pkg:deb/ubuntu/curl@8.5.0-2ubuntu10.8?arch=source&distro=noble
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed8.5.0-2ubuntu10.8
Affected versions
8.*
8.2.1-1ubuntu3
8.2.1-1ubuntu3.1
8.4.0-2ubuntu1
8.5.0-2ubuntu1
8.5.0-2ubuntu2
8.5.0-2ubuntu8
8.5.0-2ubuntu9
8.5.0-2ubuntu10
8.5.0-2ubuntu10.1
8.5.0-2ubuntu10.2
8.5.0-2ubuntu10.3
8.5.0-2ubuntu10.4
8.5.0-2ubuntu10.5
8.5.0-2ubuntu10.6
8.5.0-2ubuntu10.7
Ecosystem specific
{
"priority_reason": "Upstream defined it as low",
"binaries": [
{
"binary_name": "curl",
"binary_version": "8.5.0-2ubuntu10.8"
},
{
"binary_name": "libcurl3t64-gnutls",
"binary_version": "8.5.0-2ubuntu10.8"
},
{
"binary_name": "libcurl4-gnutls-dev",
"binary_version": "8.5.0-2ubuntu10.8"
},
{
"binary_name": "libcurl4-openssl-dev",
"binary_version": "8.5.0-2ubuntu10.8"
},
{
"binary_name": "libcurl4t64",
"binary_version": "8.5.0-2ubuntu10.8"
}
],
"availability": "No subscription required"
}
Ubuntu:25.10 / curl
Package
- Name
- curl
- Purl
- pkg:deb/ubuntu/curl@8.14.1-2ubuntu1.2?arch=source&distro=questing
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed8.14.1-2ubuntu1.2
Affected versions
8.*
8.12.1-3ubuntu1
8.13.0-5ubuntu1
8.14.1-1ubuntu2
8.14.1-1ubuntu3
8.14.1-2ubuntu1
8.14.1-2ubuntu1.1
Ecosystem specific
{
"priority_reason": "Upstream defined it as low",
"binaries": [
{
"binary_name": "curl",
"binary_version": "8.14.1-2ubuntu1.2"
},
{
"binary_name": "libcurl3t64-gnutls",
"binary_version": "8.14.1-2ubuntu1.2"
},
{
"binary_name": "libcurl4-gnutls-dev",
"binary_version": "8.14.1-2ubuntu1.2"
},
{
"binary_name": "libcurl4-openssl-dev",
"binary_version": "8.14.1-2ubuntu1.2"
},
{
"binary_name": "libcurl4t64",
"binary_version": "8.14.1-2ubuntu1.2"
}
],
"availability": "No subscription required"
}