CVE-2026-71852

EUVD-2026-54600
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/_font.py function Font._collect_cid_character_widths expands unusually large CID font /W width ranges or excessive width entries during text extraction. This issue is fixed in 6.15.0.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.3 LOW
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 2.24%
Affected Products (NVD)
VendorProductVersion
py-pdfpypdf
𝑥
< 6.15.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
pypdf
bookworm
postponed
forky
6.21.1-1
fixed
sid
6.21.1-1
fixed
trixie
no-dsa
pypdf2
bookworm
postponed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
pypdf
jammy
dne
noble
needs-triage
resolute
needs-triage
Common Weakness Enumeration
References
https://github.com/py-pdf/pypdf/commit/51cb6acf9e8a35b77e90b4d87d28fe3e1416d7d7
https://github.com/py-pdf/pypdf/pull/3946
https://github.com/py-pdf/pypdf/releases/tag/6.15.0
https://github.com/py-pdf/pypdf/security/advisories/GHSA-fwg2-594c-jp42