CVE-2026-113793

DiscoveredOct 21, 2026UpdatedOct 28, 2026

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

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CVSS v3.1

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EPSS

0.47%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

Connections

1 relationships

CWE-835

source

Timeline

disclosure → media coverage

Oct 21, 2026

Disclosure — published as a CVE record. · last revised by NVD Oct 28, 2026