CVE-2026-59936 | pypdf is a free and open-source pure-python PDF library. Pri… | CVSS 8.7 HIGH

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.1, an attacker can craft a PDF with a page content stream containing a not terminated inline image, causing an infinite loop during inline image end marker detection such as when extracting page text. This issue is fixed in version 6.14.1.

Metadata

CVE ID: CVE-2026-59936
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-07 18:20 UTC
Published: 2026-07-08 19:34 UTC
Last updated: 2026-07-08 19:34 UTC
Primary CWE: CWE-400
CWE-400: Uncontrolled Resource Consumption
Vendor / Product: py-pdf / pypdf
Sources: cve.org · NVD

Severity & Metrics

8.7 HIGH CVSS 4.0

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

Affected products (1)

Vendor	Product	Platform	Versions
py-pdf	pypdf	—	< 6.14.1

Weakness (CWE)

CWE	Source	Description
CWE-400	cna	CWE-400: Uncontrolled Resource Consumption

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.7	HIGH	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References (4)

https://github.com/py-pdf/pypdf/security/advisories/GHSA-5xf7-4p34-54qr https://github.com/py-pdf/pypdf/security/advisories/GHSA-5xf7-4p34-54qr
https://github.com/py-pdf/pypdf/pull/3891 https://github.com/py-pdf/pypdf/pull/3891
https://github.com/py-pdf/pypdf/commit/ec3b14596186c40caca7cf8ab9b2155203e01b5b https://github.com/py-pdf/pypdf/commit/ec3b14596186c40caca7cf8ab9b2155203e01b5b
https://github.com/py-pdf/pypdf/releases/tag/6.14.1 https://github.com/py-pdf/pypdf/releases/tag/6.14.1