UBUNTU-CVE-2026-31826

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Source

https://ubuntu.com/security/CVE-2026-31826

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31826.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-31826

Upstream

CVE-2026-31826

Published

2026-03-10T22:16:00Z

Modified

2026-03-20T08:07:00.590193Z

Severity

6.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

pypdf is a free and open-source pure-python PDF library. Prior to 6.8.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing a content stream with a rather large /Length value, regardless of the actual data length inside the stream. This vulnerability is fixed in 6.8.0.

References

Affected packages

Ubuntu:24.04:LTS / pypdf

Package

Name: pypdf
Purl: pkg:deb/ubuntu/pypdf@4.0.2-1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown 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-2026-31826.json"

Ubuntu:25.10 / pypdf