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Sicherheitslücken in pypdf

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für pypdf: 19. Davon im KEV-Katalog: 0.

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Sicherheitslücken: 60

  1. CVE-2026-115585

    Hoch · CVSS 7.1EPSS 0,53%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)

    pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an incomplete remediation for repeated malformed cross-reference entries in GHSA-55h5-xmcq-c37v could still trigger a complete PDF stream reload during each recovery attempt even when a recovery cache was present, causing crafted cross-reference streams to produce long runtimes. This issue is fixed in version 6.21.2.

    Veröffentlicht Aktualisiert
  2. CVE-2026-115580

    Hoch · CVSS 7.1EPSS 0,53%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes for large xref table header limits

    pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.

    Veröffentlicht Aktualisiert
  3. CVE-2026-115572

    Hoch · CVSS 7.1EPSS 0,53%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes for repeated references to the same missing object

    pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF that repeatedly references the same nonexistent indirect object, causing relevant file parts such as pages to trigger repeated full-file recovery loads and long runtimes when accessed. This issue is fixed in version 6.21.2.

    Veröffentlicht Aktualisiert
  4. CVE-2026-113795

    Mittel · CVSS 6EPSS 0,47%Keine Korrektur veröffentlicht

    pypdf: Possible large memory usage for streams with multiple filters

    pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, accessing a crafted PDF stream with a large number of filters or multiple filters that pass around large amounts of data can cause large memory consumption. This issue is fixed in version 6.20.0.

    Veröffentlicht Aktualisiert
  5. CVE-2026-113794

    Mittel · CVSS 6EPSS 0,47%Keine Korrektur veröffentlicht

    pypdf: Possible infinite loop when hitting EOF in standard xref table

    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.

    Veröffentlicht Aktualisiert
  6. CVE-2026-113793

    Mittel · CVSS 6EPSS 0,47%Keine Korrektur veröffentlicht

    pypdf: Possible infinite loop when removing tree items

    pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

    Veröffentlicht Aktualisiert
  7. CVE-2026-113792

    Mittel · CVSS 6EPSS 0,47%Keine Korrektur veröffentlicht

    pypdf: 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 in version 6.20.1.

    Veröffentlicht Aktualisiert
  8. CVE-2026-113791

    Mittel · CVSS 6EPSS 0,32%Keine Korrektur veröffentlicht

    pypdf: Possible large memory usage when parsing content streams

    pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing a content stream with many small operations, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.

    Veröffentlicht Aktualisiert
  9. CVE-2026-113790

    Mittel · CVSS 6EPSS 0,32%Keine Korrektur veröffentlicht

    pypdf: Possible large memory usage when parsing arrays and dictionaries

    pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing arrays or dictionaries with many elements, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.

    Veröffentlicht Aktualisiert
  10. CVE-2026-113789

    Mittel · CVSS 6EPSS 0,32%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes/large memory usage when retrieving form fields

    pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0.

    Veröffentlicht Aktualisiert
  11. CVE-2026-113786

    Niedrig · CVSS 2.3EPSS 0,38%Keine Korrektur veröffentlicht

    pypdf: Unvalidated JPEG image data loading

    pypdf is a free and open-source pure-python PDF library. Prior to 6.21.1, an attacker can craft a PDF containing image data labeled with the /DCTDecode filter that causes Pillow to select and invoke an unintended image parser when the image is loaded. Environments without the optional Pillow dependency are not affected. This issue is fixed in version 6.21.1.

    Veröffentlicht Aktualisiert
  12. CVE-2026-103000

    Hoch · CVSS 8.7EPSS 0,34%Keine Korrektur veröffentlicht

    pypdf: Possible large memory usage when retrieving alphabetical page labels

    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 when an application retrieves document page labels, consuming excessive memory and potentially making the application unavailable. This issue is fixed in version 6.19.0.

    Veröffentlicht Aktualisiert
  13. CVE-2026-102999

    Hoch · CVSS 8.7EPSS 0,34%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes with large amount of embedded files

    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 content lookup, producing repeated work and long runtimes when an application accesses the embedded-file mapping. This issue is fixed in version 6.19.0.

    Veröffentlicht Aktualisiert
  14. CVE-2026-102998

    Hoch · CVSS 8.7EPSS 0,34%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes when generating appearance streams

    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 loop when an application updates fields with flattening enabled, resulting in excessive runtimes and application unavailability. This issue is fixed in version 6.19.0.

    Veröffentlicht Aktualisiert
  15. CVE-2026-102997

    Hoch · CVSS 8.7EPSS 0,34%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes for partially malformed FlateDecode streams (Follow-up)

    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 the earlier recovery counter fails to advance for bytes that successfully decode, causing long runtimes and application unavailability. This is a residual issue after the malformed FlateDecode recovery fix. This issue is fixed in version 6.18.1.

    Veröffentlicht Aktualisiert
  16. CVE-2026-102996

    Hoch · CVSS 8.7EPSS 0,34%Keine Korrektur veröffentlicht

    pypdf: Possible large memory usage when parsing font data

    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 process entries beyond the 256 character codes meaningful for a simple font and consume excessive memory during operations such as text extraction. This issue is fixed in version 6.18.1.

    Veröffentlicht Aktualisiert
  17. CVE-2026-102995

    Hoch · CVSS 8.7EPSS 0,34%Keine Korrektur veröffentlicht

    pypdf: Possible large memory usage for large /ToUnicode streams (Follow-up 2)

    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 retain oversized values during operations such as text extraction and consume excessive memory. This is a second follow-up to earlier /ToUnicode resource-consumption fixes and is limited to the remaining token-length path. This issue is fixed in version 6.18.1.

    Veröffentlicht Aktualisiert
  18. CVE-2026-102994

    Hoch · CVSS 8.7EPSS 0,34%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes/large memory usage when parsing indirect objects

    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 pypdf/generic/_base.py to scan excessive input through read_until_whitespace, resulting in long runtimes and application unavailability. This issue is fixed in version 6.18.0.

    Veröffentlicht Aktualisiert
  19. CVE-2026-102993

    Hoch · CVSS 8.7EPSS 0,35%Keine Korrektur veröffentlicht

    pypdf: Possible large memory usage when retrieving Roman page labels

    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 application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0.

    Veröffentlicht Aktualisiert
  20. CVE-2026-84311

    Mittel · CVSS 4.8EPSS 0,14%Keine Korrektur veröffentlicht

    pypdf: Possible long runtimes/large memory usage when extracting XForm objects

    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 form XObjects in which each form invokes a child multiple times, creating exponentially many traversal paths and causing long runtimes and large memory consumption. This issue is fixed in version 6.16.1.

    Veröffentlicht Aktualisiert

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