Intel/AIKIDO-2025-10548
pypdf
AIKIDO-2025-10548
pypdf is vulnerable to Denial of Service (DoS)
Denial of Service (DoS)CVE-2025-55197 Published Aug 13, 2025
50
Medium Risk
This Affects:
pypdf1.0 - 5.9.0
Fixed in 6.0.0Are you affected? Scan for Free
TL;DR
Affected versions of this package are vulnerable to denial of service due to full decompression of nested FlateDecode streams, allowing a small malicious PDF to expand to over 1 PB and exhaust system resources.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
pypdf is vulnerable to Denial of Service (DoS) in versions 1.0 - 5.9.0.
How to fix this
Upgrade the pypdf library to the patch version.
Links
GitHub Release
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
Resources
Industries
Use Cases
Compare
© 2026 Aikido Security BV | BE0792914919
Keizer Karelstraat 15, 9000, Ghent, Belgium
95 Third St, 2nd Fl, San Francisco, CA 94103, US
Unit 6.15 Runway East 18 18 Crucifix Ln, London SE1 3JW UK
Ghent, Belgium | San Francisco, US
SOC 2Compliant
ISO 27001Compliant