UBUNTU-CVE-2026-33745

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Source
https://ubuntu.com/security/CVE-2026-33745
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33745.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33745
Upstream
Published
2026-03-27T01:16:00Z
Modified
2026-05-20T16:25:30.560772555Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects (301/302/307/308). A malicious or compromised server can redirect the client to an attacker-controlled host, which then receives the plaintext credentials in the Authorization header. Version 0.39.0 fixes the issue.

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

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 

{
    "binaries": [
        {
            "binary_name": "libcpp-httplib0",
            "binary_version": "0.10.3+ds-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33745.json"

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

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 

{
    "binaries": [
        {
            "binary_name": "libcpp-httplib0.14t64",
            "binary_version": "0.14.3+ds-1.1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33745.json"

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

Affected versions

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcpp-httplib0.18",
            "binary_version": "0.18.7-1ubuntu0.25.10.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33745.json"

Ubuntu:26.04:LTS / cpp-httplib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcpp-httplib0.26",
            "binary_version": "0.26.0+ds-2ubuntu3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33745.json"