pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken cross-reference table entries. This issue is fixed in version 6.14.0.

The remote openSUSE 16 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21589-1 advisory.

    Changes in python-PyPDF2:

    - CVE-2026-59937: possible long runtimes for repeated malformed cross-reference entries (bsc#1271147)
    - CVE-2026-59936: possible infinite loop for not terminated inline images (bsc#1271146)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with
    repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken
    cross-reference table entries. This issue is fixed in version 6.14.0. (CVE-2026-59937)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - pypdf is a free and open-source pure-python PDF library. Prior to 6.14.0, an attacker can craft a PDF with     repeated malformed cross-reference streams that cause pypdf to spend long runtimes recovering broken     cross-reference table entries. This issue is fixed in version 6.14.0. (CVE-2026-59937)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
337992	openSUSE 16 Security Update : python-PyPDF2 (openSUSE-SU-2026:21589-1)	Nessus	SuSE Local Security Checks	Local	high
445214	SCA: security update for pypdf (GHSA-55h5-xmcq-c37v)	Tenable Cloud Security	SCA Checks	Local	medium
445214	SCA: security update for pypdf (GHSA-55h5-xmcq-c37v)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
325822	Linux Distros Unpatched Vulnerability : CVE-2026-59937	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-59937

medium

Tenable Plugins

high

medium

medium

medium