VDB-348212 · CVE-2026-28351 · EUVD-2026-9070

py-pdf pypdf up to 6.7.3 resource consumption

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5.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in py-pdf pypdf up to 6.7.3 and classified as problematic. The impacted element is an unknown function. Such manipulation leads to resource consumption. This vulnerability is uniquely identified as CVE-2026-28351. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in py-pdf pypdf up to 6.7.3. Affected by this issue is an unknown code. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.4, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the content stream using the RunLengthDecode filter. This has been fixed in pypdf 6.7.4. As a workaround, consider applying the changes from PR #3664.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-28351 since 02/26/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 300281 (Linux Distros Unpatched Vulnerability : CVE-2026-28351), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.7.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (300281), EUVD (EUVD-2026-9070) and CERT Bund (WID-SEC-2026-1730). Once again VulDB remains the best source for vulnerability data.

Affected

Xerox FreeFlow Print Server

Productinfo

Vendor

py-pdf

Name

pypdf

Version

Website

Product: https://github.com/py-pdf/pypdf/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔒

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 300281
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-28351

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: pypdf 6.7.4

Timelineinfo

02/26/2026 CVE reserved
02/27/2026 +1 days Advisory disclosed
02/27/2026 +0 days VulDB entry created
06/01/2026 +94 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-28351 (🔒)
GCVE (CVE): GCVE-0-2026-28351
GCVE (VulDB): GCVE-100-348212
EUVD: 🔒
CERT Bund: WID-SEC-2026-1730 - Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff

Entryinfo

Created: 02/27/2026 22:20
Updated: 06/01/2026 02:00
Changes: 02/27/2026 22:20 (66), 02/28/2026 06:01 (1), 03/03/2026 04:54 (2), 03/03/2026 21:39 (10), 06/01/2026 02:00 (7)
Complete: 🔍
Cache ID: 216::103