pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0.
Metrics
Affected Vendors & Products
References
History
Wed, 28 Oct 2026 02:30:00 +0000
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ssvc
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Thu, 22 Oct 2026 12:30:00 +0000
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threat_severity
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cvssV3_1
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Thu, 22 Oct 2026 00:15:00 +0000
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Py-pdf
Py-pdf pypdf |
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Py-pdf
Py-pdf pypdf |
Wed, 21 Oct 2026 17:15:00 +0000
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| Description | pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, an attacker can craft an incomplete PDF that ends inside a standard cross-reference table, causing pypdf to mishandle the unexpected end of file and enter an infinite loop. This issue is fixed in version 6.20.0. | |
| Title | pypdf: Possible infinite loop when hitting EOF in standard xref table | |
| Weaknesses | CWE-835 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-21T15:59:26.054Z
Updated: 2026-10-28T01:20:41.647Z
Reserved: 2026-10-20T17:39:41.373Z
Link: CVE-2026-113794
Updated: 2026-10-28T01:20:37.598Z
Status : Undergoing Analysis
Published: 2026-10-21T16:17:28.707
Modified: 2026-10-28T02:17:03.443
Link: CVE-2026-113794