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Global data_breach → Government CRITICAL 1h Global ransomware → Financial Services / Cybersecurity CRITICAL 1h Global vulnerability → Information Technology / Cybersecurity CRITICAL 3h Global malware → Energy and Utilities CRITICAL 4h Global ransomware → Multiple sectors CRITICAL 4h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 7h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 7h Global phishing → Multiple sectors HIGH 8h Global insider → Cybersecurity Services CRITICAL 8h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 8h Global data_breach → Government CRITICAL 1h Global ransomware → Financial Services / Cybersecurity CRITICAL 1h Global vulnerability → Information Technology / Cybersecurity CRITICAL 3h Global malware → Energy and Utilities CRITICAL 4h Global ransomware → Multiple sectors CRITICAL 4h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 7h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 7h Global phishing → Multiple sectors HIGH 8h Global insider → Cybersecurity Services CRITICAL 8h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 8h Global data_breach → Government CRITICAL 1h Global ransomware → Financial Services / Cybersecurity CRITICAL 1h Global vulnerability → Information Technology / Cybersecurity CRITICAL 3h Global malware → Energy and Utilities CRITICAL 4h Global ransomware → Multiple sectors CRITICAL 4h Global vulnerability → Industrial Control Systems / IoT / Infrastructure CRITICAL 7h Global supply_chain → Information Technology and Critical Infrastructure CRITICAL 7h Global phishing → Multiple sectors HIGH 8h Global insider → Cybersecurity Services CRITICAL 8h Global ransomware → Multiple sectors (U.S. companies) CRITICAL 8h

Vulnerabilities ›

CVE-2026-28351

Medium

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 co

CWE-400 — Weakness Type

                    Published: Feb 27, 2026                      ·  Modified: Mar 5, 2026                      ·  Source: NVD                

CVSS v3

5.3

🔗 NVD Official

📄 Description (English)

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.

🤖

Queued for AI Analysis

This CVE will be auto-analyzed on the next cron run.

🔗 References & Sources 4

https://github.com/py-pdf/pypdf/commit/f309c6003746414dc7b5048c19e6d879ff2dc858

security-advisories@github.com

https://github.com/py-pdf/pypdf/pull/3664

security-advisories@github.com

Issue Tracking Patch

https://github.com/py-pdf/pypdf/releases/tag/6.7.4

security-advisories@github.com

https://github.com/py-pdf/pypdf/security/advisories/GHSA-f2v5-7jq9-h8cg

security-advisories@github.com

Patch Vendor Advisory

📦 Affected Products / CPE 1 entries

pypdf_project:pypdf

📊 CVSS Score

5.3

/ 10.0 — Medium

📊 CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack VectorN — None / Network

Attack ComplexityL — Low / Local

Privileges RequiredN — None / Network

User InteractionN — None / Network

ScopeU — Unchanged

ConfidentialityN — None / Network

IntegrityN — None / Network

AvailabilityL — Low / Local

📋 Quick Facts

Severity Medium

CVSS Score5.3

CWECWE-400

Exploit No

Patch ✗ No

Published 2026-02-27

Source Feed nvd

Views 2

🏷️ Tags

CWE-400

🏢 Vendor Advisories

🔗 https://github.com/py-pdf/pypdf/security/advisories/...

⚡ Actions

🔗 NVD Official Page ⚡ Exploit-DB Search 🐙 GitHub PoC Search 🎯 MITRE ATT&CK 📊 CVE Details

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