Detections
Analytics

Echo: pypdf: security update to 6.15.0

medium Tenable Cloud Security Plugin ID 461911

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-82398)

Solution

Update the pypdf library and its related packages to version 6.15.0 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-82398

Plugin Details

Severity: Medium

ID: 461911

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.61

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2026-82398

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 2.7

Threat Vector: CVSS:4.0/E:U

Vector: 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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/3/2026

Vulnerability Publication Date: 8/31/2026

Reference Information

CVE: CVE-2026-82398