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Sicherheitslücken in pypdf · Seite 3

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

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Sicherheitslücken: 62

  1. CVE-2026-41312

    Mittel · CVSS 4.8EPSS 0,23%Keine Korrektur veröffentlicht

    pypdf: Manipulated FlateDecode predictor parameters can exhaust RAM

    pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.2 can craft a PDF which leads to the RAM being exhausted. This requires accessing a stream compressed using `/FlateDecode` with a `/Predictor` unequal 1 and large predictor parameters. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

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  2. CVE-2026-41168

    Mittel · CVSS 6.9EPSS 0,3%Keine Korrektur veröffentlicht

    pypdf has possible long runtimes for wrong size values in cross-reference and object streams

    pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.

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  3. CVE-2026-40260

    Mittel · CVSS 6.9EPSS 0,42%Keine Korrektur veröffentlicht

    pypdf: Manipulated XMP metadata entity declarations can exhaust RAM

    pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.

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  4. CVE-2026-33699

    Mittel · CVSS 4.6EPSS 0,47%Keine Korrektur veröffentlicht

    pypdf: Possible infinite loop during recovery attempts in DictionaryObject.read_from_stream

    pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.2 have a vulnerability in which an attacker can craft a PDF which leads to an infinite loop. This requires reading a file in non-strict mode. This has been fixed in pypdf 6.9.2. If users cannot upgrade yet, consider applying the changes from the patch manually.

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  5. CVE-2026-33123

    Mittel · CVSS 5.1EPSS 0,36%Keine Korrektur veröffentlicht

    pypdf has inefficient decoding of array-based streams

    pypdf is a free and open-source pure-python PDF library. Versions prior to 6.9.1 allow an attacker to craft a malicious PDF which leads to long runtimes and/or large memory usage. Exploitation requires accessing an array-based stream with many entries. This issue has been fixed in version 6.9.1.

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  6. CVE-2026-31826

    Mittel · CVSS 6.8EPSS 0,18%Keine Korrektur veröffentlicht

    pypdf: manipulated stream length values can exhaust RAM

    pypdf is a free and open-source pure-python PDF library. Prior to 6.8.0, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing a content stream with a rather large /Length value, regardless of the actual data length inside the stream. This vulnerability is fixed in 6.8.0.

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  7. CVE-2026-28804

    Mittel · CVSS 6.9EPSS 0,41%Keine Korrektur veröffentlicht

    pypdf: Inefficient decoding of ASCIIHexDecode streams

    pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5.

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  8. CVE-2026-28351

    Mittel · CVSS 6.9EPSS 0,48%Keine Korrektur veröffentlicht

    Manipulated RunLengthDecode streams can exhaust RAM

    pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.

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  9. CVE-2026-27888

    Mittel · CVSS 6.6EPSS 0,4%Keine Korrektur veröffentlicht

    pypdf: Manipulated FlateDecode XFA streams can exhaust RAM

    pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing the `xfa` property of a reader or writer and the corresponding stream being compressed using `/FlateDecode`. This has been fixed in pypdf 6.7.3. As a workaround, apply the patch manually.

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  10. CVE-2026-27628

    Niedrig · CVSS 1.2EPSS 0,4%Keine Korrektur veröffentlicht

    pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams

    pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.

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  11. CVE-2026-27026

    Mittel · CVSS 6.9EPSS 0,19%Keine Korrektur veröffentlicht

    pypdf possibly has long runtimes for malformed FlateDecode streams

    pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires a malformed /FlateDecode stream, where the byte-by-byte decompression is used. This vulnerability is fixed in 6.7.1.

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  12. CVE-2026-27025

    Mittel · CVSS 6.9EPSS 0,19%Keine Korrektur veröffentlicht

    pypdf has possible long runtimes/large memory usage for large /ToUnicode streams

    pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. This vulnerability is fixed in 6.7.1.

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  13. CVE-2026-27024

    Mittel · CVSS 6.9EPSS 0,19%Keine Korrektur veröffentlicht

    pypdf has a possible infinite loop when processing TreeObject

    pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires accessing the children of a TreeObject, for example as part of outlines. This vulnerability is fixed in 6.7.1.

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  14. CVE-2026-24688

    Mittel · CVSS 5.1EPSS 0,45%Keine Korrektur veröffentlicht

    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 been fixed in pypdf 6.6.2. If projects cannot upgrade yet, consider applying the changes from PR #3610 manually.

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  15. CVE-2026-22691

    Niedrig · CVSS 2.7EPSS 0,43%Keine Korrektur veröffentlicht

    pypdf has possible long runtimes for malformed startxref

    pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-reference table, PDF files with lots of whitespace characters become problematic. Only the non-strict reading mode is affected. Only the non-strict reading mode is affected. This issue has been patched in version 6.6.0.

    pypdfBetriebssysteme
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  16. CVE-2026-22690

    Niedrig · CVSS 2.7EPSS 0,43%Keine Korrektur veröffentlicht

    pypdf has possible long runtimes for missing /Root object with large /Size values

    pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for missing /Root object with large /Size values. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for actually invalid files. This can be achieved by omitting the /Root entry in the trailer, while using a rather large /Size value. Only the non-strict reading mode is affected. This issue has been patched in version 6.6.0.

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  17. CVE-2025-66019

    Mittel · CVSS 6.6EPSS 0,39%Keine Korrektur veröffentlicht

    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 LZWDecode filter. This issue has been patched in version 6.4.0.

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  18. CVE-2025-62708

    Mittel · CVSS 6.6EPSS 0,44%Keine Korrektur veröffentlicht

    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 been fixed in pypdf version 6.1.3.

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  19. CVE-2025-62707

    Mittel · CVSS 6.6EPSS 0,44%Keine Korrektur veröffentlicht

    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 DCTDecode filter. This has been fixed in pypdf version 6.1.3.

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  20. CVE-2025-55197

    Mittel · CVSS 6.6EPSS 0,48%Keine Korrektur veröffentlicht

    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 stream. Other content streams are affected on explicit access. This issue has been fixed in 6.0.0. If an update is not possible, a workaround involves including the fixed code from pypdf.filters.decompress into the existing filters file.

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