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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
NVD MITRE
EPSS Score
0.4%
Top 70.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
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
View detailed technique mapping

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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