CVE-2026-102999

pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files can cause the dictionary-based attachments API in pypdf/_doc_common.py to reparse the full attachment list for each content lookup, producing repeated work and long runtimes when an application accesses the embedded-file mapping. This issue is fixed in version 6.19.0.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3	Patch
https://github.com/py-pdf/pypdf/pull/4081	Patch Issue Tracking
https://github.com/py-pdf/pypdf/releases/tag/6.19.0	Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:pypdf_project:pypdf:*:*:*:*:*:*:*:*

History

05 Oct 2026, 15:04

Type	Values Removed	Values Added
CPE		cpe:2.3:a:pypdf_project:pypdf::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
References	~~() https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3 -~~	() https://github.com/py-pdf/pypdf/commit/6b10556d13609a68f9ed18bb29fdd8bba88eb2c3 - Patch
References	~~() https://github.com/py-pdf/pypdf/pull/4081 -~~	() https://github.com/py-pdf/pypdf/pull/4081 - Patch, Issue Tracking
References	~~() https://github.com/py-pdf/pypdf/releases/tag/6.19.0 -~~	() https://github.com/py-pdf/pypdf/releases/tag/6.19.0 - Release Notes
References	~~() https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj -~~	() https://github.com/py-pdf/pypdf/security/advisories/GHSA-v247-6f48-mgcj - Vendor Advisory
First Time		Pypdf Project Pypdf Project pypdf

30 Sep 2026, 21:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-30 21:17

Updated : 2026-10-05 15:04

NVD link : CVE-2026-102999

Mitre link : CVE-2026-102999

CVE.ORG link : CVE-2026-102999

JSON object : View

Products Affected

pypdf_project

pypdf

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-407

Inefficient Algorithmic Complexity

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