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CVE-2026-113795

pypdf: Possible large memory usage for streams with multiple filters

MEDIUM
6
CVSS Score
Published: October 21, 2026 at 04:01 PM UTC
Updated: October 30, 2026 at 04:17 PM UTC
1 product affected across 1 vendorPypdf

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Severity
MEDIUM6
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Pypdf· Py PDF
90%
v < 6.20.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

x_refsource_CONFIRM
Source: cverecord
https://github.com/py-pdf/pypdf/security/advisories/GHSA-7mh2-4gg2-979f
x_refsource_MISC
Source: cverecord
https://github.com/py-pdf/pypdf/pull/4173
x_refsource_MISC
Source: cverecord
https://github.com/py-pdf/pypdf/commit/80a84d4be6022d910874ccb0d2365400f3f0e185
x_refsource_MISC
Source: cverecord
https://github.com/py-pdf/pypdf/releases/tag/6.20.0

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6MEDIUMGitHub_M
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-400CWE-770

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