Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.8.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing a content stream with a rather large /Length value, regardless of the actual data length inside the stream. This vulnerability is fixed in 6.8.0.
Scores
CVSS v3
5.5
EPSS
0.0000
EPSS Percentile
0.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (3)
py-pdf/pypdf
< 6.8.0
pypdf_project/pypdf
< 6.8.0
pypi/pypdf
0 - 6.8.0PyPI
Published
Mar 10, 2026
Tracked Since
Mar 11, 2026