PT-2026-105532 · Pypi · Pypdf
Published
2026-10-01
·
Updated
2026-10-01
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Impact
An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires updating form field values with flattening enabled, which triggers appearance stream generation.
Patches
This has been fixed in pypdf==6.19.0.
Workarounds
If you cannot upgrade yet, consider applying the changes from PR #4087.
Fix
Resource Exhaustion
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Weakness Enumeration
Related Identifiers
Affected Products
Pypdf