CVE-2026-103000
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large alphabetical page-label values that cause pypdf/_page_labels.py to generate strings beyond a reasonable page-label length when an application retrieves document page labels, consuming excessive memory and potentially making the application unavailable. This issue is fixed in version 6.19.0.
Published:Sep 30, 2026
Last Modified:Oct 5, 2026
EPS:Sep 30, 2026
EPSS Score:0.00301
CVSS Score:7.5
Affected Products
Vendor
Product
Action
Vendor
Py-pdf
Product
Pypdf
Py-pdf
Pypdf
Vendor
Pypdf Project
Product
Pypdf
Pypdf Project
Pypdf
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
