UBUNTU-CVE-2026-84309

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Source

https://ubuntu.com/security/CVE-2026-84309

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84309.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-84309

Upstream

CVE-2026-84309

Published

2026-09-01T20:17:00Z

Modified

2026-09-16T14:03:44Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

pypdf is a free and open-source pure-python PDF library. Prior to 6.16.0, an attacker can craft a PDF whose cyclic tree structure causes pypdf/generic/_data_structures.py TreeObject.insert_child to follow /Next links indefinitely when a writing code path inserts a child, producing an infinite loop. This issue is fixed in version 6.16.0.

References

Affected packages

Ubuntu:24.04:LTS / pypdf

Package

Name: pypdf
Purl: pkg:deb/ubuntu/pypdf?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.4.1-1

3.17.4-1

4.*

4.0.0-1

4.0.1-1

4.0.2-1

Ecosystem specific

{
    "binaries":  [
        {
            "binary_name":  "python3-pypdf",
            "binary_version":  "4.0.2-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-84309.json"

Ubuntu:26.04:LTS / pypdf