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CVE-2026-113795

pypdf: Possible large memory usage for streams with multiple filters

CVSS score

6.0

EPSS probability

—

Risk score

0.6

Published

3 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

DayBreach AI Explanation

Verified against sources

CVE-2026-113795: Memory Consumption Vulnerability in pypdf Library

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

pypdf versions prior to 6.20.0 are vulnerable to high memory consumption when accessing a crafted PDF stream featuring multiple filters.

Why does it matter?

This flaw can lead to excessive memory consumption issues, potentially allowing attackers to disrupt service availability by exhausting system resources.

What should be done?

  • Update the pypdf library
  • Follow vendor advisories and available fixes
Chain of evidence and sources2 verified claims

pypdf kütüphanesinin 6.20.0 öncesi sürümleri yüksek bellek tüketimine karşı zafiyet içermektedir.

S0 · daybreach-canonicalS1 · cvelist

Zafiyet, çok sayıda filtre içeren özel bir PDF akışına erişildiğinde ortaya çıkmaktadır.

S0 · daybreach-canonicalS1 · cvelist
Show the technical text from the sources

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.0, accessing a crafted PDF stream with a large number of filters or multiple filters that pass around large amounts of data can cause large memory consumption. This issue is fixed in version 6.20.0.

CVSS vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CWE: CWE-400, CWE-770

This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-113795 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1py-pdfpypdf View
2pypipypdf View
Total affected vendors: 2|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.0CVSS V4_0MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NCVE CNA
6.0CVSS V40MEDIUMCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/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:XNVD
6.0CVSS 4.0—Vector not publishedGitHub Advisory

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-113795 is associated with the following CWEs:

CWE-400: Common Weakness Enumeration Entry CWE-400CWE-770: Allocation of Resources Without Limits or Throttling

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-113795 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
User—

Official Sources and Advisories

https://github.com/py-pdf/pypdf/security/advisories/GHSA-7mh2-4gg2-979fvendor-advisoryhttps://github.com/py-pdf/pypdf/pull/4173vendor-advisoryhttps://github.com/py-pdf/pypdf/commit/80a84d4be6022d910874ccb0d2365400f3f0e185vendor-advisoryhttps://github.com/py-pdf/pypdf/releases/tag/6.20.0vendor-advisoryhttps://github.com/advisories/GHSA-7mh2-4gg2-979fvendor-advisory

CVSS Vector Radar Chart

6.0 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.RequiredConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionP
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)P
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

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pypi

Weakness Type (CWE & CAPEC)

CWE-400 CWE-770

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CVE-2026-113795 · pypdf: Possible large memory usage for…