| Package | Affected versions | Patched versions |
|---|---|---|
| pypdf | < 6.21.0 | 6.21.0 |
An attacker who uses this vulnerability can craft a PDF which leads to large memory usage and/or long runtimes. This requires retrieving the form fields of a document.
This has been fixed in pypdf==6.21.0.
If you cannot upgrade yet, consider applying the changes from PR #4219.
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