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Excessive Iteration

CVE-2026-41313

Medium
4.8/10

Summary

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 long runtimes. This requires loading a PDF with a large trailer `/Size` value in incremental mode. This has been fixed in pypdf 6.10.2. As a workaround, one may apply the changes from the patch manually.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • REQUIRED
  • NONE
  • NONE
  • HIGH

CWE-834 - Excessive Iteration

The software performs an iteration or loop without sufficiently limiting the number of times that the loop is executed.

Advisory Timeline

  • Published