CVEvulnerability

CVE-2026-84310

4.8 MEDIUM Published 2026-09-01 Modified 2026-10-05 Official page ↗

Status: Analyzed
Published: 2026-09-01
Last modified: 2026-10-05
Assigner: [email protected]
CVSS 4.0 ([email protected]): 4.8 MEDIUM — CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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
CVSS 3.1 ([email protected]): 3.3 LOW — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Weaknesses: CWE-405, CWE-834

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.16.1, an attacker can craft a PDF that causes pypdf/_doc_common.py _get_outline to consume long runtimes and large amounts of memory when retrieving document outlines with large numbers of entries or deeply nested reused paths because the traversal lacked global entry-count and nesting-depth limits. This issue is fixed in version 6.16.1.

Affected configurations

• pypdf project pypdf (< 6.16.1)

Weakness · CWE (2)

CWE-405 Asymmetric Resource Consumption (Amplification) weakness
CWE-834 Excessive Iteration weakness

References

https://github.com/py-pdf/pypdf/commit/d91ab705fd81ed1a9cec175c6958600dea1a4942 Patch
https://github.com/py-pdf/pypdf/pull/3966 Patch
https://github.com/py-pdf/pypdf/releases/tag/6.16.1 Release Notes
https://github.com/py-pdf/pypdf/security/advisories/GHSA-23w6-3w8w-8484 Patch, Vendor Advisory

CVE-2026-84310

Description

Affected configurations

Related

Weakness · CWE (2)

References