CVE-2026-82398

5.3 Moyenne

Publiée le 01/09/2026 à 00:17 · Modifiée le 05/10/2026 à 19:41 · Analysée par le NVD · Source : security-advisories@github.com

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, an attacker can craft a PDF that causes long runtimes when the pypdf/_utils.py function read_until_whitespace reads a stream containing a long run of bytes without whitespace. The function repeatedly performs immutable bytes concatenation in a one-byte loop, causing quadratic processing cost for the long non-whitespace input. This issue is fixed in version 6.15.0.

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Produits concernés

Scores CVSS

Version	Score	Source	Vecteur
4.0	6.9 Moyenne	security-advisories@github.com	`CVSS:4.0/AV:N/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`
3.1	5.3 Moyenne	nvd@nist.gov (NVD)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`

Faiblesses (CWE)

CWE-407

Références

https://github.com/py-pdf/pypdf/commit/4959848e057e37c218dccad7465259210923faaa Patch
https://github.com/py-pdf/pypdf/pull/3947 Patch
https://github.com/py-pdf/pypdf/releases/tag/6.15.0 Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-fc8x-2rww-xw9m PatchVendor Advisory

CVE-2026-82398

Description

Produits concernés

Scores CVSS

Faiblesses (CWE)

Références

Ailleurs