PY
Product
Pypdf
by Pypdf Project · last CVE Sep 30, 2026
52
CVEs
0
On KEV
7.5
Max CVSS
8
New 30D
Severity mix
Critical 0High 17Medium 29Low 6
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Add Pypdf to your stack to get only the CVEs that touch what you run.

CVECVSSEPSSPublishedSummary · affected versions
CVE-2026-103000
7.5
0%
Sep 30
pypdf: Possible large memory usage when retrieving alphabetical page labels
Affected: before 6.19.0
CVE-2026-102999
7.5
0%
Sep 30
pypdf: Possible long runtimes with large amount of embedded files
Affected: before 6.19.0
CVE-2026-102998
7.5
0%
Sep 30
pypdf: Possible long runtimes when generating appearance streams
Affected: before 6.19.0
CVE-2026-102997
7.5
0%
Sep 30
pypdf: Possible long runtimes for partially malformed FlateDecode streams (Follow-up)
Affected: before 6.18.1
CVE-2026-102996
7.5
0%
Sep 30
pypdf: Possible large memory usage when parsing font data
Affected: before 6.18.1
CVE-2026-102995
7.5
0%
Sep 30
pypdf: Possible large memory usage for large /ToUnicode streams (Follow-up 2)
Affected: before 6.18.1
CVE-2026-102994
7.5
0%
Sep 30
pypdf: Possible long runtimes/large memory usage when parsing indirect objects
Affected: before 6.18.0
CVE-2026-102993
7.5
0%
Sep 30
pypdf: Possible large memory usage when retrieving Roman page labels
Affected: before 6.17.0
CVE-2026-59936
7.5
1%
Jul 8
pypdf: Possible infinite loop for not terminated inline images
Affected: before 6.14.1
CVE-2026-59935
7.5
1%
Jul 8
pypdf: Possible infinite loop for not terminated inline images (ASCII85 and ASCIIHex filter)
Affected: before 6.14.2
CVE-2026-59937
7.5
1%
Jul 8
pypdf: Possible long runtimes for repeated malformed cross-reference entries
Affected: before 6.14.0
CVE-2026-33699
7.5
0%
Mar 26
pypdf: Possible infinite loop during recovery attempts in DictionaryObject.read_from_stream
Affected: before 6.9.2
CVE-2026-27888
7.5
0%
Feb 26
pypdf: Manipulated FlateDecode XFA streams can exhaust RAM
Affected: before 6.7.3
CVE-2026-27628
7.5
0%
Feb 25
pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams
Affected: before 6.7.2
CVE-2025-62708
7.5
0%
Oct 22
pypdf manipulated LZWDecode streams can exhaust RAM
Affected: before 6.1.3
CVE-2025-62707
7.5
0%
Oct 22
pypdf affected by possible infinite loop when reading DCT inline images without EOF marker
Affected: before 6.1.3
CVE-2025-55197
7.5
0%
Aug 13
pypdf's Manipulated FlateDecode streams can exhaust RAM
Affected: before 6.0.0
CVE-2026-57204
6.5
0%
Jun 30
pypdf: Missing stream length values ignore defined limits
Affected: before 6.13.3
CVE-2026-41314
6.5
0%
Apr 22
pypdf: Manipulated FlateDecode image dimensions can exhaust RAM
Affected: before 6.10.2
CVE-2026-41313
6.5
0%
Apr 22
pypdf: Possible long runtimes for wrong size values in incremental mode
Affected: before 6.10.2
CVE-2026-41312
6.5
0%
Apr 22
pypdf: Manipulated FlateDecode predictor parameters can exhaust RAM
Affected: before 6.10.2
CVE-2026-33123
6.5
0%
Mar 20
pypdf has inefficient decoding of array-based streams
Affected: before 6.9.1
CVE-2023-36810
6.5
1%
Jun 30
pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files
Affected: through 1.27.8
CVE-2023-36807
6.5
1%
Jun 30
pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files
Affected: 2.10.5
CVE-2026-84309
5.5
0%
Sep 1
pypdf: Possible infinite loop for TreeObject.insert_child
Affected: before 6.16.0
CVE-2026-54651
5.5
0%
Jun 22
pypdf: Possible infinite loop when processing threads/articles in writer
Affected: before 6.13.1
CVE-2026-49461
5.5
0%
Jun 22
pypdf: Possible large memory usage for form XObjects during text extraction
Affected: before 6.12.2
CVE-2026-54531
5.5
0%
Jun 22
pypdf: Possible infinite loop when processing outlines/bookmarks in writer
Affected: before 6.13.0
CVE-2026-54530
5.5
0%
Jun 22
pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction
Affected: before 6.13.0
CVE-2026-48155
5.5
0%
May 28
pypdf: Possible large memory usage for large offsets for layout mode text
Affected: before 6.12.0
CVE-2026-48735
5.5
0%
May 28
pypdf: Manipulated XMP metadata streams can exhaust RAM
Affected: before 6.12.1
CVE-2026-31826
5.5
0%
Mar 10
pypdf: manipulated stream length values can exhaust RAM
Affected: before 6.8.0
CVE-2026-27026
5.5
0%
Feb 20
pypdf possibly has long runtimes for malformed FlateDecode streams
Affected: before 6.7.1
CVE-2026-27025
5.5
0%
Feb 20
pypdf has possible long runtimes/large memory usage for large /ToUnicode streams
Affected: before 6.7.1
CVE-2026-27024
5.5
0%
Feb 20
pypdf has a possible infinite loop when processing TreeObject
Affected: before 6.7.1
CVE-2023-46250
5.5
0%
Oct 31
pypdf is a free and open-source pure-python PDF library
Affected: 3.7.0 before 3.17.0
CVE-2023-36464
5.5
0%
Jun 27
pypdf is an open source, pure-python PDF library
Affected: before 3.9.0
CVE-2026-82398
5.3
1%
Aug 31
pypdf: Inefficient handling of non-whitespace inputs in read_until_whitespace
Affected: before 6.15.0
CVE-2026-59938
5.3
1%
Jul 8
pypdf: Possible large memory usage for wrong image dimensions
Affected: before 6.14.0
CVE-2026-41168
5.3
0%
Apr 22
pypdf has possible long runtimes for wrong size values in cross-reference and object streams
Affected: before 6.10.1
CVE-2026-40260
5.3
0%
Apr 16
pypdf: Manipulated XMP metadata entity declarations can exhaust RAM
Affected: before 6.10.0
CVE-2026-28804
5.3
0%
Mar 6
pypdf: Inefficient decoding of ASCIIHexDecode streams
Affected: before 6.7.5
CVE-2026-28351
5.3
0%
Feb 27
Manipulated RunLengthDecode streams can exhaust RAM
Affected: before 6.7.4
CVE-2026-22691
5.3
0%
Jan 10
pypdf has possible long runtimes for malformed startxref
Affected: before 6.6.0
CVE-2026-22690
5.3
0%
Jan 10
pypdf has possible long runtimes for missing /Root object with large /Size values
Affected: before 6.6.0
CVE-2026-24688
4.3
0%
Jan 27
pypdf has possible Infinite Loop when processing outlines/bookmarks
Affected: before 6.6.2
CVE-2026-84311
3.3
0%
Sep 1
pypdf: Possible long runtimes/large memory usage when extracting XForm objects
Affected: before 6.16.1
CVE-2026-84310
3.3
0%
Sep 1
pypdf: Possible long runtimes/large memory usage when retrieving outlines
Affected: before 6.16.1
CVE-2026-71870
3.3
0%
Aug 7
pypdf: Possible large memory usage for large /ToUnicode streams
Affected: before 6.15.0
CVE-2026-71852
3.3
0%
Aug 7
pypdf: Possible long runtimes/large memory usage for large CID font width ranges
Affected: before 6.15.0
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