UBUNTU-CVE-2026-84379

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Source
https://ubuntu.com/security/CVE-2026-84379
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84379.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-84379
Upstream
Published
2026-09-02T18:21:00Z
Modified
2026-10-17T13:01:12Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

HTTPX2 is a next generation HTTP client for Python. Prior to 2.11.0, FileField.render_headers() in src/httpx2/httpx2/_multipart.py directly interpolates attacker-controlled content_type values and custom headers from the files= three-element (filename, content, content_type) tuple and the files= four-element (filename, content, content_type, headers) tuple into multipart/form-data part headers without validating header names or values. CR or LF characters can terminate a part header, inject additional part headers, or end the part header block early, allowing a downstream multipart parser to treat attacker-supplied lines as genuine headers and potentially alter part semantics or bypass header-based checks. This issue is fixed in version 2.11.0.

References

Affected packages

Ubuntu:26.10 / python-httpx2

Package

Name
python-httpx2
Purl
pkg:deb/ubuntu/python-httpx2?arch=source&distro=stonking

Affected ranges

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

Affected versions

2.*
2.5.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-httpcore2",
            "binary_version":  "2.5.0-1"
        },
        {
            "binary_name":  "python3-httpx2",
            "binary_version":  "2.5.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84379.json"