pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.

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History

Thu, 28 May 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Py-pdf
Py-pdf pypdf
Vendors & Products Py-pdf
Py-pdf pypdf

Thu, 28 May 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 28 May 2026 15:30:00 +0000

Type Values Removed Values Added
Description pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.
Title pypdf: Possible large memory usage for large offsets for layout mode text
Weaknesses CWE-400
References
Metrics cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-28T15:57:54.367Z

Reserved: 2026-05-20T23:12:43.031Z

Link: CVE-2026-48155

cve-icon Vulnrichment

Updated: 2026-05-28T15:57:50.832Z

cve-icon NVD

Status : Received

Published: 2026-05-28T16:16:28.890

Modified: 2026-05-28T16:16:28.890

Link: CVE-2026-48155

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-28T17:00:13Z

Weaknesses