CVE-2026-59935

pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)

Published: Jul 8, 2026Updated: Jul 9, 2026 Sources: CVE List NVDCWE-835

7.5HIGH

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issue is fixed in version 6.14.2.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-835

Affected Products

py-pdf

package-ecosystemaka pypdf, pypdf2

pypdfOn-prem

OSS Libraries / pypi

pypdf project

oss-project

pypdfLibrary

OSS Libraries / generic-library

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q

github.com

https://github.com/py-pdf/pypdf/pull/3892

github.com

https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2

github.com

and 1 more references View all →

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