py-pdf pypdf up to 6.12.1 resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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3.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in py-pdf pypdf up to 6.12.1. This vulnerability affects unknown code. This manipulation causes resource consumption. This vulnerability appears as CVE-2026-49461. The attack requires local access. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in py-pdf pypdf up to 6.12.1 and classified as problematic. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting the text of a page which contains a form XObject with self-references. This vulnerability is fixed in 6.12.2.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-49461 since 05/30/2026. The exploitation appears to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 322244 (Linux Distros Unpatched Vulnerability : CVE-2026-49461), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (322244). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

Website

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: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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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: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 322244
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-49461

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: pypdf 6.12.2
Patch: github.com

Timelineinfo

05/30/2026 CVE reserved
06/23/2026 +24 days Advisory disclosed
06/23/2026 +0 days VulDB entry created
06/24/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-j543-4vmf-qm7v
Status: Confirmed

CVE: CVE-2026-49461 (🔒)
GCVE (CVE): GCVE-0-2026-49461
GCVE (VulDB): GCVE-100-372793

Entryinfo

Created: 06/23/2026 07:01
Updated: 06/24/2026 18:23
Changes: 06/23/2026 07:01 (69), 06/24/2026 18:23 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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