CVE-2026-84310

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 35/100
Published: 2026-09-01 Modified: 2026-11-02 First seen: 2026-11-02 Status: active

Attack Surface

Low Complexity No Auth

CVSS Vector Breakdown

AV: Local
AC: Low
PR: None
UI: Passive
S: X
AT: None
VC: None
VI: None
VA: Low

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.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
py-pdf pypdf < 6.16.1

Bug Bounty Relevance

35 / 100
✓ No authentication
✓ Low complexity

CVSS Score

4.8 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.14%
Raw Score 0.001350
Percentile 3.0%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00135
2026-11-12
0.00135
2026-11-10
0.00135
2026-11-09
0.00135
2026-11-08
0.00135
2026-11-07
0.00135
2026-11-06
0.00135
2026-11-05
0.00135
2026-11-04
0.00135
2026-11-03
0.00135
2026-11-02
0.00135

Intelligence Sources

nvd ref →