CVE-2026-48735 MEDIUM

CVE-2026-48735: pypdf: Manipulated XMP metadata streams can exhaust RAM

Vendor Py-Pdf
Product pypdf
Weakness CWE-770 · Uncontrolled resource consumption
Published May 28, 2026
Last update June 2, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.

Key dates

02Disclosure timeline

May 28, 2026 CVE published
June 2, 2026 Record updated