5.1

CVE-2026-48156

pypdf: Possible long runtimes for zero-only width values in cross-reference streams

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Pypdf ProjectPypdf Version < 6.12.0
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.025
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 3.3 1.8 1.4
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
security-advisories@github.com 5.1 0 0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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
CWE-834 Excessive Iteration

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

https://github.com/py-pdf/pypdf/releases/tag/6.12.0
Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-248m-82v9-q6g6
Patch
Vendor Advisory
https://github.com/py-pdf/pypdf/pull/3791
Patch
Issue Tracking