HIGH7.5CVE-2026-33699pypdf: Possible infinite loop during recovery attempts in DictionaryObject.read_from_stream from 0, < 6.9.2
HIGH7.5CVE-2026-27888pypdf: Manipulated FlateDecode XFA streams can exhaust RAM from 0, < 6.7.3
HIGH7.5CVE-2026-27628pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams from 0, < 6.7.2
HIGH7.5pypdf can exhaust RAM via manipulated LZWDecode streams
from 0, < 6.1.3
HIGH7.5pypdf possibly loops infinitely when reading DCT inline images without EOF marker
from 0, < 6.1.3
HIGH7.5PyPDF's Manipulated FlateDecode streams can exhaust RAM
from 0, < 6.0.0
MEDIUM6.5pypdf: Manipulated FlateDecode image dimensions can exhaust RAM
from 0, < 6.10.2
MEDIUM6.5pypdf: Possible long runtimes for wrong size values in incremental mode
from 0, < 6.10.2
MEDIUM6.5pypdf: Manipulated FlateDecode predictor parameters can exhaust RAM
from 0, < 6.10.2
MEDIUM6.5pypdf has inefficient decoding of array-based streams
from 0, < 6.9.1
MEDIUM6.2pypdf and PyPDF2 possible Infinite Loop when a comment isn't followed by a character
>= 3.1.0, < 3.9.0
MEDIUM5.5pypdf: Possible large memory usage for large offsets for layout mode text
from 0, < 6.12.0
MEDIUM5.5pypdf: manipulated stream length values can exhaust RAM
from 0, < 6.8.0
MEDIUM5.5pypdf possibly has long runtimes for malformed FlateDecode streams
from 0, < 6.7.1
MEDIUM5.5pypdf has possible long runtimes/large memory usage for large /ToUnicode streams
from 0, < 6.7.1
MEDIUM5.5pypdf has a possible infinite loop when processing TreeObject
from 0, < 6.7.1
MEDIUM5.3pypdf has long runtimes for wrong size values in cross-reference and object streams
from 0, < 6.10.1
MEDIUM5.3pypdf: Manipulated XMP metadata entity declarations can exhaust RAM
from 0, < 6.10.0
MEDIUM5.3pypdf vulnerable to inefficient decoding of ASCIIHexDecode streams
from 0, < 6.7.5
MEDIUM5.3pypdf: Manipulated RunLengthDecode streams can exhaust RAM
from 0, < 6.7.4
MEDIUM5.3pypdf has possible long runtimes for malformed startxref
from 0, < 6.6.0
MEDIUM5.3pypdf has possible long runtimes for missing /Root object with large /Size values
from 0, < 6.6.0
MEDIUM5.1Possible Infinite Loop when PdfWriter(clone_from) is used with a PDF
>= 3.7.0, < 3.17.0
MEDIUM4.3pypdf has possible Infinite Loop when processing outlines/bookmarks
from 0, < 6.6.2
LOW3.3pypdf: Possible long runtimes for zero-only width values in cross-reference streamsuntimes for zero-only width values in cross-reference streams
from 0, < 6.12.0
—pypdf's LZWDecode streams be manipulated to exhaust RAM
from 0, < 6.4.0