pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory while opening a crafted PDF containing cross-reference streams that declare very large entry counts. Highly compressible streams and /Prev chains can multiply the number of parsed entries across a document, while negative /Index counts can bypass the existing per-stream clamp. This issue is fixed in version 6.21.3.

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 6.21.3, pypdf can consume excessive
    memory while opening a crafted PDF containing cross-reference streams that declare very large entry
    counts. Highly compressible streams and /Prev chains can multiply the number of parsed entries across a
    document, while negative /Index counts can bypass the existing per-stream clamp. This issue is fixed in
    version 6.21.3. (CVE-2026-119209)

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 6.21.3, pypdf can consume excessive     memory while opening a crafted PDF containing cross-reference streams that declare very large entry     counts. Highly compressible streams and /Prev chains can multiply the number of parsed entries across a     document, while negative /Index counts can bypass the existing per-stream clamp. This issue is fixed in     version 6.21.3. (CVE-2026-119209)

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

ID	Name	Product	Family	Type	Severity
478088	SCA: security update for pypdf (GHSA-x3rh-gjgm-fmqc)	Tenable Cloud Security	SCA Checks	Local	high
478088	SCA: security update for pypdf (GHSA-x3rh-gjgm-fmqc)	Tenable Self-Hosted Container Security	SCA Checks	Local	high
374239	Linux Distros Unpatched Vulnerability : CVE-2026-119209	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-119209

high

Tenable Plugins

high

high

high