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Excessive Iteration

CVE-2026-48156

Medium
5.1/10

Summary

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.0, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with /W [0 0 0] values and large /Size values. This vulnerability is fixed in 6.12.0.

  • LOW
  • LOCAL
  • NONE
  • UNCHANGED
  • REQUIRED
  • NONE
  • NONE
  • LOW

CWE-834 - Excessive Iteration

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

References

Advisory Timeline

  • Published