Description

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.

INFO

Published Date :

2026-03-10T21:36:52.186Z

Last Modified :

2026-03-11T15:59:26.902Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-31826 vulnerability.

Vendors Products
Py-pdf
  • Pypdf
Pypdf Project
  • Pypdf
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-31826.

URL Resource
https://github.com/py-pdf/pypdf/pull/3675 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/releases/tag/6.8.0 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/security/advisories/GHSA-hqmh-ppp3-xvm7 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-31826 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-31826 cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact