CVE-2026-48155 Details
Description
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 large memory usage. This requires extracting text in layout mode with large character offsets. This vulnerability is fixed in 6.12.0.
A vulnerability in pypdf, a pure-Python PDF library, prior to version 6.12.0, allows attackers to create PDFs that cause excessive memory usage. This issue arises when extracting text in layout mode with large character offsets. The vulnerability has been addressed in version 6.12.0.
Users can upgrade to pypdf version 6.12.0 or later to address this vulnerability. If an immediate upgrade is not possible, the changes from PR #3790 can be applied as a temporary workaround.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 28, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/py-pdf/pypdf/pull/3790 | [email protected] | Issue TrackingPatch |
| https://github.com/py-pdf/pypdf/releases/tag/6.12.0 | [email protected] | Release Notes |
| https://github.com/py-pdf/pypdf/security/advisories/GHSA-cj93-chg6-vgv8 | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| pypdf project pypdf | < 6.12.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 29, 2026 | Initial Analysis | [email protected] |
| May 28, 2026 | New CVE Received | [email protected] |