USN-8470-1

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Source
https://ubuntu.com/security/notices/USN-8470-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8470-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8470-1
Upstream
Related
Published
2026-06-25T07:53:24Z
Modified
2026-06-25T19:19:14.373046226Z
Summary
cpp-httplib vulnerability
Details

It was discovered that cpp-httplib incorrectly percent-decoded HTTP request header values. A remote attacker could use this to inject crafted header content possibly leading to response splitting, log injection or proxy smuggling.

References

Affected packages

Ubuntu:Pro:22.04:LTS / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/ubuntu/cpp-httplib?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.10.3+ds-1ubuntu0.1~esm2

Affected versions

0.*
0.9.9+ds-1
0.9.10+ds-1
0.10.1+ds-1
0.10.2+ds-1
0.10.3+ds-1
0.10.3+ds-1ubuntu0.1~esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.10.3+ds-1ubuntu0.1~esm2",
            "binary_name": "libcpp-httplib0"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8470-1.json"
cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-45372",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:22.04:LTS"
}

Ubuntu:Pro:24.04:LTS / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/ubuntu/cpp-httplib?arch=source&distro=esm-apps%2Fnoble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.14.3+ds-1.1ubuntu0.1~esm2

Affected versions

0.*
0.13.1+ds-1ubuntu1
0.14.3+ds-1
0.14.3+ds-1.1
0.14.3+ds-1.1build1
0.14.3+ds-1.1build2
0.14.3+ds-1.1ubuntu0.1~esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.14.3+ds-1.1ubuntu0.1~esm2",
            "binary_name": "libcpp-httplib0.14t64"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8470-1.json"
cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-45372",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:24.04:LTS"
}

Ubuntu:25.10 / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/ubuntu/cpp-httplib?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.18.7-1ubuntu0.25.10.2

Affected versions

0.*
0.18.7-1
0.18.7-1ubuntu0.25.10.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "0.18.7-1ubuntu0.25.10.2",
            "binary_name": "libcpp-httplib0.18"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8470-1.json"
cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-45372",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:25.10"
}

Ubuntu:Pro:26.04:LTS / cpp-httplib

Package

Name
cpp-httplib
Purl
pkg:deb/ubuntu/cpp-httplib?arch=source&distro=esm-apps%2Fresolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.26.0+ds-2ubuntu3+esm1

Affected versions

0.*
0.18.7-1
0.26.0+ds-2ubuntu2
0.26.0+ds-2ubuntu3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "0.26.0+ds-2ubuntu3+esm1",
            "binary_name": "libcpp-httplib0.26"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8470-1.json"
cves_map 
{
    "cves": [
        {
            "id": "CVE-2026-45372",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:26.04:LTS"
}