CVE-2026-40260

MEDIUM EPSS 33.9%
Published Apr 17, 20262mo ago · Modified Jun 17, 20262w ago
6.9 CVSS 4.0
Medium
Find Similar
Published Apr 17, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.

CVSS Details

Base Score
6.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
33.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-776

Affected Products 1

VendorProductVersionRange
pypdf_projectpypdf* <6.10.0

References 4

  • github.com https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8
    Patch
  • github.com https://github.com/py-pdf/pypdf/pull/3724
    Issue TrackingPatch
  • github.com https://github.com/py-pdf/pypdf/releases/tag/6.10.0
    ProductRelease Notes
  • github.com https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx
    MitigationPatchVendor Advisory

Remediation

  • github.com https://github.com/py-pdf/pypdf/commit/b15a374e5ca648d4878e57c3b2c0551e7f8cc7f8
    Patch
  • github.com https://github.com/py-pdf/pypdf/pull/3724
    Issue TrackingPatch
  • github.com https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx
    MitigationPatchVendor Advisory