CVE-2026-113789

LOWCVSS 6.0 · MEDIUM

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF that causes large memory usage or long runtimes when an application retrieves the document's form fields. This issue is fixed in version 6.21.0.

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0.0/ 10 priority

Sources & remediation

Other references

https://github.com/py-pdf/pypdf/commit/5ef728f0e16d225c853e89f861ba0a67402fe3f2
https://github.com/py-pdf/pypdf/pull/4219
https://github.com/py-pdf/pypdf/releases/tag/6.21.0
https://github.com/py-pdf/pypdf/security/advisories/GHSA-6vvc-x485-93v7

Weakness type (CWE)

CWE-400CWE-407

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Deep dive

Full discourse1 post

DailyCVE@dailycve1d
🟠 pypdf, Uncontrolled Resource Consumption, #CVE-2026-113789 (Moderate) -DC-Oct2026-3665 https://dailycve.com/pypdf-uncontrolled-resource-consumption-cve-2026-113789-moderate-dc-oct2026-3665/
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