pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.

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 6.21.2, an attacker can craft a PDF with
    a standard cross-reference table whose declared entry count exceeds what the file can contain, causing
    excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.
    (CVE-2026-115580)

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 6.21.2, an attacker can craft a PDF with     a standard cross-reference table whose declared entry count exceeds what the file can contain, causing     excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.
    (CVE-2026-115580)

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

ID	Name	Product	Family	Type	Severity
477487	Chainguard: multiple open-webui packages: security update to 0.12.3-r8	Tenable Cloud Security	Chainguard Local Security Checks	Local	high
477487	Chainguard: multiple open-webui packages: security update to 0.12.3-r8	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	high
477256	SCA: security update for pypdf (GHSA-gmh7-3g9r-mjh5)	Tenable Cloud Security	SCA Checks	Local	high
477256	SCA: security update for pypdf (GHSA-gmh7-3g9r-mjh5)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
371708	Linux Distros Unpatched Vulnerability : CVE-2026-115580	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-115580

high

Tenable Plugins

high

high

high

high

high