Vendor
py-pdf
74 known vulnerabilities.
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Medium 5.1CVE-2026-24688 Public exploit
pypdf has possible Infinite Loop when processing outlines/bookmarks
pypdf is a free and open-source pure-python PDF library. An attacker who uses an infinite loop vulnerability that is present in versions prior to 6.6.2 can craft a PDF which leads to an infinite loop. This requires accessing the outlines/bookmarks. This has b…
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Medium 6.6
pypdf manipulated LZWDecode streams can exhaust RAM
pypdf is a free and open-source pure-python PDF library. Prior to version 6.4.0, an attacker who uses this vulnerability can craft a PDF which leads to a memory usage of up to 1 GB per stream. This requires parsing the content stream of a page using the LZWDe…
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Medium 6.6
pypdf manipulated LZWDecode streams can exhaust RAM
pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream of a page using the LZWDecode filter. This has…
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Medium 6.6
pypdf affected by possible infinite loop when reading DCT inline images without EOF marker
pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page which has an inline image using the DC…
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Medium 6.6
pypdf's Manipulated FlateDecode streams can exhaust RAM
pypdf is a free and open-source pure-python PDF library. Prior to version 6.0.0, an attacker can craft a PDF which leads to the RAM being exhausted. This requires just reading the file if a series of FlateDecode filters is used on a malicious cross-reference …
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Medium 5.1
pypdf possible Infinite Loop when PdfWriter(clone_from) is used with a PDF
pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions 3.7.0 through 3.16.4 can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core…
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Medium 6.2
Quadratic runtime with malformed PDF missing xref marker in pypdf
pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current proc…
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Medium 6.2
Infinite Loop when reading malformed objects in pypdf
pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In version 2.10.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This infinite loop blocks the curre…
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Medium 6.2
Infinite Loop when a comment isn't followed by a character in pypdf
pypdf is an open source, pure-python PDF library. In affected versions an attacker may craft a PDF which leads to an infinite loop if `__parse_content_stream` is executed. That is, for example, the case if the user extracted text from such a PDF. This issue w…
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Medium 6.2
Manipulated inline images can cause Infinite Loop in PyPDF2
PyPDF2 is an open source python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In versions prior to 1.27.5 an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if the PyPDF2 if …