PT-2026-132831

CVE-2026-119209

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Published

2026-10-29

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Updated

2026-10-29

Description by

CVSS 4.0
7.1
High
MetricsAV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory while opening a crafted PDF containing cross-reference streams that declare very large entry counts. Highly compressible streams and /Prev chains can multiply the number of parsed entries across a document, while negative /Index counts can bypass the existing per-stream clamp. This issue is fixed in version 6.21.3.
Exploitability
Fix
Impacts
Vendors
Affected products
Weakness enumeration
CWE-770: Allocation of Resources Without Limits or Throttling
CWE-400: Uncontrolled Resource Consumption
Related identifiers
CVE-2026-119209
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