CVE-2026-71870

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/cmap.py function parsebfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed...

pypdf: Possible large memory usage for large /ToUnicode streams

Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. Patches This has been fixed in pypdf==6.15.0. Workarounds If you cannot...

CVE-2026-71852

A flaw was found in pypdf. A remote attacker could provide a specially crafted PDF file that, when processed by the Font.collectcidcharacterwidths function during text extraction, causes the library to expand unusually large font width ranges. This can lead to excessive memory consumption and lon...

CVE-2026-71870 pypdf: Possible large memory usage for large /ToUnicode streams

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/cmap.py function parsebfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed...

CVE-2026-71870 pypdf: Possible large memory usage for large /ToUnicode streams

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/cmap.py function parsebfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed...

EUVD-2026-54615

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/cmap.py function parsebfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed...

CVE-2026-71870

CVE-2026-71870 (pypdf) : Prior to 6.15.0, a crafted PDF can trigger extremely large memory use during text extraction when the font /ToUnicode CMap is parsed by pypdf/_cmap.py in parse_bfrange. This is a local, low-complexity issue that could lead to resource exhaustion; the advisory fixes it in ...

CVE-2026-71870

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/cmap.py function parsebfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed...

CVE-2026-71852

The CVE concerns the Python PDF library pypdf. Before version 6.15.0, text extraction can trigger unusually large CID font /W width ranges or excessive width entries in pypdf/_font.py:Font._collect_cid_character_widths, causing long runtimes and high memory usage. This is remedied in 6.15.0. The ...

EUVD-2026-54600

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/font.py function Font.collectcidcharacterwidths expands unusually large CID font /W width ranges or excessive width entries during text extractio...

CVE-2026-71852 pypdf: Possible long runtimes/large memory usage for large CID font width ranges

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause long runtimes and large memory consumption when pypdf/font.py function Font.collectcidcharacterwidths expands unusually large CID font /W width ranges or excessive width entries during text extractio...

GHSA-5XF7-4P34-54QR pypdf: Possible infinite loop for not terminated inline images

Impact 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 with a not terminated inline image, as done when extracting the page text for example. Patches This has been fixed in pypdf==6.14.1. Workarounds If yo...

EUVD-2026-42366

pypdf: Possible infinite loop for not terminated inline images...

PYSEC-2026-3009 pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. Patches This has been fixed in pypdf==6.13.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR 3830...

PYSEC-2026-3020 pypdf: Possible large memory usage for form XObjects during text extraction

Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references. Patches This has been fixed in pypdf==6.12.2. Workarounds If you cannot upgrade yet, consider applying...

Infinite loop

Overview pypdf is an A pure-python PDF library capable of splitting, merging, cropping, and transforming PDF files Affected versions of this package are vulnerable to Infinite loop in ContentStream.readinlineimage in pypdf/generic/datastructures.py. An attacker can hang text extraction or any oth...

CVE-2026-59936

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...

CVE-2026-59936

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...

CVE-2026-59936 pypdf: Possible infinite loop for not terminated inline images

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...

CVE-2026-59935

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issu...