CVE-2025-55197
Last modified
CVE-2025-55197 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. pypdf is a free and open-source pure-python PDF library. Prior to version 6.0.0, an attacker can craft a PDF which leads to the RAM being exhausted. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
pypdf is a free and open-source pure-python PDF library. Prior to version 6.0.0, an attacker can craft a PDF which leads to the RAM being exhausted. This requires just reading the file if a series of FlateDecode filters is used on a malicious cross-reference stream. Other content streams are affected on explicit access. This issue has been fixed in 6.0.0. If an update is not possible, a workaround involves including the fixed code from pypdf.filters.decompress into the existing filters file.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.0.0 |
References
- https://github.com/py-pdf/pypdf/issues/3429Issue Tracking
- https://github.com/py-pdf/pypdf/releases/tag/6.0.0Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-7hfw-26vp-jp8mMitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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