CVE-2026-71870

A flaw was found in pypdf, a pure-python PDF library. A remote attacker could exploit this vulnerability by providing a specially crafted PDF file. When the library attempts to parse unusually large font /ToUnicode CMap streams during text extraction, it can lead to excessive memory consumption...

Memory Allocation with Excessive Size Value

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 Memory Allocation with Excessive Size Value in the parsing of the /ToUnicode entry of a font with unusually large values. An...

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...

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

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-2026-71870

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

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...

UBUNTU-CVE-2026-71852

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 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...

Excessive Iteration

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 Excessive Iteration in the parsing process of font width entries with unusually large values. An attacker can cause excessive...

GHSA-FWG2-594C-JP42 pypdf: Possible long runtimes/large memory usage for large CID font width ranges

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the font width entries of a font with unusually large values, for example during text extraction. Patches This has been fixed in pypdf==6.15.0. Workaroun...

pypdf: Possible long runtimes/large memory usage for large CID font width ranges

Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the font width entries of a font with unusually large values, for example during text extraction. Patches This has been fixed in pypdf==6.15.0. Workaroun...

CVE-2026-71852

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...

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...

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 ...