pypdf vulnerabilities
CVEs whose affected-version data names the pypdf package (pip). Each record lists the affected and patched versions; check a specific version with the dependency checker or POST /api/sbom.
46 CVEsRSS
CVE-2026-115572High· 7.1pypdf: Possible long runtimes for repeated references to the same missing object
pypdf: Possible long runtimes for repeated references to the same missing object
CVE-2026-115585High· 7.1pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)
pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)
CVE-2026-115580High· 7.1pypdf: Possible long runtimes for large xref table header limits
pypdf: Possible long runtimes for large xref table header limits
CVE-2026-113789Medium· 6.0pypdf: Possible long runtimes/large memory usage when retrieving form fields
pypdf: Possible long runtimes/large memory usage when retrieving form fields
CVE-2026-113790Medium· 6.0pypdf: Possible large memory usage when parsing arrays and dictionaries
pypdf: Possible large memory usage when parsing arrays and dictionaries
CVE-2026-113791Medium· 6.0pypdf: Possible large memory usage when parsing content streams
pypdf: Possible large memory usage when parsing content streams
CVE-2026-113795Medium· 6.0pypdf: Possible large memory usage for streams with multiple filters
pypdf: Possible large memory usage for streams with multiple filters
CVE-2026-113793Medium· 6.0pypdf: Possible infinite loop when removing tree items
pypdf: Possible infinite loop when removing tree items
CVE-2026-113794Medium· 6.0pypdf: Possible infinite loop when hitting EOF in standard xref table
pypdf: Possible infinite loop when hitting EOF in standard xref table
CVE-2026-113792Medium· 6.0pypdf: Possible infinite loop in PdfWriter.find_outline_item
pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, calling PdfWriter.find_outline_item on a crafted PDF with a cyclic outline hierarchy can enter an infinite loop and block the current process. This issue is fixed …
CVE-2026-113786Low· 2.3pypdf: Unvalidated JPEG image data loading
pypdf: Unvalidated JPEG image data loading
CVE-2026-103000High· 7.5pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF can provide unusually large alphabetical page-label values that cause pypdf/_page_labels.py to generate strings beyond a reasonable page-label length…
CVE-2026-102999High· 7.5pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF containing many embedded files can cause the dictionary-based attachments API in pypdf/_doc_common.py to reparse the full attachment list for each co…
CVE-2026-102998High· 7.5pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.19.0, a crafted PDF with form field values can cause pypdf/generic/_appearance_stream.py appearance-stream generation to repeat invariant selection-data work inside a lo…
CVE-2026-102997High· 7.5pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF containing a partially malformed /FlateDecode stream with padded data can force pypdf/filters.py to use inefficient byte-by-byte decompression while …
CVE-2026-102996High· 7.5pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can provide a TrueType or Type1 simple font with an unusually large /Widths array, causing pypdf/_font.py Font._collect_tt_t1_character_widths to pro…
CVE-2026-102995High· 7.5⚖ disputedpypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.1, a crafted PDF can place unusually large source-code or destination-string tokens in a font /ToUnicode mapping, causing pypdf/_cmap.py parse_bfchar to decode and re…
CVE-2026-102994High· 7.5pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.18.0, a crafted PDF containing indirect-object identifiers or generation-number tokens that continue for a long time without whitespace can cause pypdf/_reader.py and py…
CVE-2026-102993High· 7.5⚖ disputedpypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an applicatio…
CVE-2026-84309Medium· 5.5pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.0, an attacker can craft a PDF whose cyclic tree structure causes pypdf/generic/_data_structures.py TreeObject.insert_child to follow /Next links indefinitely when a …
CVE-2026-84311Low· 3.3⚖ disputedpypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_page.py PageObject._extract_text and PageObject.extract_xform_text to traverse a directed acyclic graph of reused fo…
CVE-2026-84310Low· 3.3⚖ disputedpypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_doc_common.py _get_outline to consume long runtimes and large amounts of memory when retrieving document outlines wi…
CVE-2026-82398Medium· 5.3pypdf is a free and open-source pure-python PDF library
pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, an attacker can craft a PDF that causes long runtimes when the pypdf/_utils.py function read_until_whitespace reads a stream containing a long run of bytes without…
CVE-2026-71870Low· 3.3⚖ disputedpypdf is a free and open-source pure-python PDF library
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 parse_bfrange parses unusually large source-code or destination-string tokens in a fo…
CVE-2026-71852Low· 3.3⚖ disputedpypdf is a free and open-source pure-python PDF library
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._collect_cid_character_widths expands unusually large CID font…
CVE-2026-54651Mediumpypdf: Possible infinite loop when processing threads/articles in writer
pypdf: Possible infinite loop when processing threads/articles in writer
CVE-2026-57204Mediumpypdf: Missing stream length values ignore defined limits
pypdf: Missing stream length values ignore defined limits
GHSA-jm82-fx9c-mx94Mediumpypdf: Missing stream length values ignore defined limits
pypdf: Missing stream length values ignore defined limits
CVE-2026-49460Mediumpypdf: Inefficient decoding of FlateDecode PNG predictor streams
pypdf: Inefficient decoding of FlateDecode PNG predictor streams
CVE-2026-49461Mediumpypdf: Possible large memory usage for form XObjects during text extraction
pypdf: Possible large memory usage for form XObjects during text extraction