CVE-2026-113791

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing a content stream with many small operations, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/py-pdf/pypdf/commit/18bd2981a74479483a0b9507602c58a63d6c9b12
https://github.com/py-pdf/pypdf/pull/4218
https://github.com/py-pdf/pypdf/releases/tag/6.21.0
https://github.com/py-pdf/pypdf/security/advisories/GHSA-cgf9-327m-v77c

Configurations

No configuration.

History

21 Oct 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 16:17

Updated : 2026-10-30 16:17

NVD link : CVE-2026-113791

Mitre link : CVE-2026-113791

CVE.ORG link : CVE-2026-113791

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

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