Is CVE-2026-119208 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-119208 being exploited in the wild.

How severe is CVE-2026-119208?

High severity, with a CVSS score of 4, published 29 October 2026.

Which products and versions are affected?

Pypdf before 6.21.3; pypdf (PyPI) < 6.21.3, ECOSYSTEM:introduced=0,fixed=6.21.3.

Is there a fix for CVE-2026-119208?

Yes. pypdf (PyPI): upgrade to 6.21.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-119208 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-119208?

Check whether you run Pypdf or pypdf (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-119208: pypdf denial of service via forged encrypted PDF page count

Q: Is there a fix for CVE-2026-119208?

Yes. pypdf (PyPI): upgrade to 6.21.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-119208 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-119208?

Check whether you run Pypdf or pypdf (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-119208 · Severity: high · CVSS 4 · Published 2026-10-29

pypdf is a Python library for reading and manipulating PDF files. When processing an encrypted PDF with a crafted page count value, the library can consume excessive memory and CPU time even after successful decryption, allowing an attacker to cause a denial of service by providing a malicious PDF document.

Technologies: Pypdf, pypdf (PyPI). Vendors: Pypdf, PyPI.

Quick answers

Is CVE-2026-119208 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-119208 being exploited in the wild.
How severe is CVE-2026-119208?: High severity, with a CVSS score of 4, published 29 October 2026.
Which products and versions are affected?: Pypdf before 6.21.3; pypdf (PyPI) < 6.21.3, ECOSYSTEM:introduced=0,fixed=6.21.3.
Is there a fix for CVE-2026-119208?: Yes. pypdf (PyPI): upgrade to 6.21.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-119208 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-119208?: Check whether you run Pypdf or pypdf (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

pypdf (PyPI): upgrade to 6.21.3 or later
```
pip install "pypdf>=6.21.3"
```

Technical details

The vulnerability exists in the get_num_pages() function, which returns the unvalidated /Count value from encrypted PDFs without walking the actual page tree, even after decryption. An attacker can craft an encrypted PDF with a forged /Count value that is much larger than the actual number of pages, causing subsequent operations like page_labels generation to allocate excessive memory. The fix validates the page count by walking the page tree after successful decryption rather than trusting the declared count.

Affected products

pypdf pypdf before 6.21.3

Identifiers

CVE-2026-119208
GHSA-62m5-6wh8-28x7

Timeline

2026-10-27: patched
2026-10-29: disclosed

References

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