pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page which has an inline image using the DCTDecode filter. This has been fixed in pypdf version 6.1.3.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Pypdf Project
  • Pypdf

No data.

No data.

References
Link Providers
https://github.com/py-pdf/pypdf/commit/f2864d6dd9bac7cecd3f4f54308b25ebbfa178f8 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/pull/3501 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/releases/tag/6.1.3 cve-icon cve-icon cve-icon
https://github.com/py-pdf/pypdf/security/advisories/GHSA-vr63-x8vc-m265 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-62707 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-62707 cve-icon
History

Fri, 24 Oct 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

threat_severity

Moderate

Thu, 23 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 23 Oct 2025 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Pypdf Project
Pypdf Project pypdf
Vendors & Products Pypdf Project
Pypdf Project pypdf

Wed, 22 Oct 2025 21:45:00 +0000

Type Values Removed Values Added
Description pypdf is a free and open-source pure-python PDF library. Prior to version 6.1.3, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires parsing the content stream of a page which has an inline image using the DCTDecode filter. This has been fixed in pypdf version 6.1.3.
Title pypdf affected by possible infinite loop when reading DCT inline images without EOF marker
Weaknesses CWE-834
References
Metrics cvssV4_0

{'score': 6.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-10-22T21:36:32.754Z

Updated: 2025-10-23T15:41:41.081Z

Reserved: 2025-10-20T19:41:22.739Z

Link: CVE-2025-62707

cve-icon Vulnrichment

Updated: 2025-10-23T15:41:36.895Z

cve-icon NVD

Status : Received

Published: 2025-10-22T22:15:35.707

Modified: 2025-10-22T22:15:35.707

Link: CVE-2025-62707

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-10-22T21:36:32Z

Links: CVE-2025-62707 - Bugzilla