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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.
CheonWoong-Park Reporter
stefan6419846 Analyst
Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires a malformed
/FlateDecodestream, where the byte-by-byte decompression is used.Patches
This has been fixed in pypdf==6.7.1.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #3644.