CVEDB API

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-22691

pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for malformed startxref. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for invalid startxref entries. When rebuilding the cross-reference table, PDF files with lots of whitespace characters become problematic. Only the non-strict reading mode is affected. Only the non-strict reading mode is affected. This issue has been patched in version 6.6.0.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.001

EPSS Ranking 17.5%

CVSS Severity

CVSS v3 Score 5.3

References

Products affected by CVE-2026-22691

Pypdf Project » Pypdf » Version: 1.17.0

cpe:2.3:a:pypdf_project:pypdf:1.17.0
Pypdf Project » Pypdf » Version: 1.18.0

cpe:2.3:a:pypdf_project:pypdf:1.18.0
Pypdf Project » Pypdf » Version: 1.19.0

cpe:2.3:a:pypdf_project:pypdf:1.19.0
Pypdf Project » Pypdf » Version: 1.20.0

cpe:2.3:a:pypdf_project:pypdf:1.20.0
Pypdf Project » Pypdf » Version: 1.21.0

cpe:2.3:a:pypdf_project:pypdf:1.21.0
Pypdf Project » Pypdf » Version: 1.22.0

cpe:2.3:a:pypdf_project:pypdf:1.22.0
Pypdf Project » Pypdf » Version: 1.23.0

cpe:2.3:a:pypdf_project:pypdf:1.23.0
Pypdf Project » Pypdf » Version: 1.24.0

cpe:2.3:a:pypdf_project:pypdf:1.24.0
Pypdf Project » Pypdf » Version: 1.25.0

cpe:2.3:a:pypdf_project:pypdf:1.25.0
Pypdf Project » Pypdf » Version: 1.25.1

cpe:2.3:a:pypdf_project:pypdf:1.25.1
Pypdf Project » Pypdf » Version: 1.26.0

cpe:2.3:a:pypdf_project:pypdf:1.26.0
Pypdf Project » Pypdf » Version: 1.27.0

cpe:2.3:a:pypdf_project:pypdf:1.27.0
Pypdf Project » Pypdf » Version: 1.27.1

cpe:2.3:a:pypdf_project:pypdf:1.27.1
Pypdf Project » Pypdf » Version: 1.27.10

cpe:2.3:a:pypdf_project:pypdf:1.27.10
Pypdf Project » Pypdf » Version: 1.27.11

cpe:2.3:a:pypdf_project:pypdf:1.27.11
Pypdf Project » Pypdf » Version: 1.27.12

cpe:2.3:a:pypdf_project:pypdf:1.27.12
Pypdf Project » Pypdf » Version: 1.27.2

cpe:2.3:a:pypdf_project:pypdf:1.27.2
Pypdf Project » Pypdf » Version: 1.27.3

cpe:2.3:a:pypdf_project:pypdf:1.27.3
Pypdf Project » Pypdf » Version: 1.27.4

cpe:2.3:a:pypdf_project:pypdf:1.27.4
Pypdf Project » Pypdf » Version: 1.27.5

cpe:2.3:a:pypdf_project:pypdf:1.27.5
Pypdf Project » Pypdf » Version: 1.27.6

cpe:2.3:a:pypdf_project:pypdf:1.27.6
Pypdf Project » Pypdf » Version: 1.27.7

cpe:2.3:a:pypdf_project:pypdf:1.27.7
Pypdf Project » Pypdf » Version: 1.27.8

cpe:2.3:a:pypdf_project:pypdf:1.27.8
Pypdf Project » Pypdf » Version: 1.27.9

cpe:2.3:a:pypdf_project:pypdf:1.27.9
Pypdf Project » Pypdf » Version: 1.28.0

cpe:2.3:a:pypdf_project:pypdf:1.28.0
Pypdf Project » Pypdf » Version: 1.28.1

cpe:2.3:a:pypdf_project:pypdf:1.28.1
Pypdf Project » Pypdf » Version: 1.28.2

cpe:2.3:a:pypdf_project:pypdf:1.28.2
Pypdf Project » Pypdf » Version: 1.28.3

cpe:2.3:a:pypdf_project:pypdf:1.28.3
Pypdf Project » Pypdf » Version: 1.28.4

cpe:2.3:a:pypdf_project:pypdf:1.28.4
Pypdf Project » Pypdf » Version: 1.28.5

cpe:2.3:a:pypdf_project:pypdf:1.28.5
Pypdf Project » Pypdf » Version: 1.28.6

cpe:2.3:a:pypdf_project:pypdf:1.28.6
Pypdf Project » Pypdf » Version: 2.0.0

cpe:2.3:a:pypdf_project:pypdf:2.0.0
Pypdf Project » Pypdf » Version: 2.1.0

cpe:2.3:a:pypdf_project:pypdf:2.1.0
Pypdf Project » Pypdf » Version: 2.1.1

cpe:2.3:a:pypdf_project:pypdf:2.1.1
Pypdf Project » Pypdf » Version: 2.10.0

cpe:2.3:a:pypdf_project:pypdf:2.10.0
Pypdf Project » Pypdf » Version: 2.10.1

cpe:2.3:a:pypdf_project:pypdf:2.10.1
Pypdf Project » Pypdf » Version: 2.10.2

cpe:2.3:a:pypdf_project:pypdf:2.10.2
Pypdf Project » Pypdf » Version: 2.10.3

cpe:2.3:a:pypdf_project:pypdf:2.10.3
Pypdf Project » Pypdf » Version: 2.10.4

cpe:2.3:a:pypdf_project:pypdf:2.10.4
Pypdf Project » Pypdf » Version: 2.10.5

cpe:2.3:a:pypdf_project:pypdf:2.10.5
Pypdf Project » Pypdf » Version: 2.10.6

cpe:2.3:a:pypdf_project:pypdf:2.10.6
Pypdf Project » Pypdf » Version: 2.10.7

cpe:2.3:a:pypdf_project:pypdf:2.10.7
Pypdf Project » Pypdf » Version: 2.10.8

cpe:2.3:a:pypdf_project:pypdf:2.10.8
Pypdf Project » Pypdf » Version: 2.10.9

cpe:2.3:a:pypdf_project:pypdf:2.10.9
Pypdf Project » Pypdf » Version: 2.11.0

cpe:2.3:a:pypdf_project:pypdf:2.11.0
Pypdf Project » Pypdf » Version: 2.11.1

cpe:2.3:a:pypdf_project:pypdf:2.11.1
Pypdf Project » Pypdf » Version: 2.11.2

cpe:2.3:a:pypdf_project:pypdf:2.11.2
Pypdf Project » Pypdf » Version: 2.12.0

cpe:2.3:a:pypdf_project:pypdf:2.12.0
Pypdf Project » Pypdf » Version: 2.12.1

cpe:2.3:a:pypdf_project:pypdf:2.12.1
Pypdf Project » Pypdf » Version: 2.2.0

cpe:2.3:a:pypdf_project:pypdf:2.2.0
Pypdf Project » Pypdf » Version: 2.2.1

cpe:2.3:a:pypdf_project:pypdf:2.2.1
Pypdf Project » Pypdf » Version: 2.3.0

cpe:2.3:a:pypdf_project:pypdf:2.3.0
Pypdf Project » Pypdf » Version: 2.3.1

cpe:2.3:a:pypdf_project:pypdf:2.3.1
Pypdf Project » Pypdf » Version: 2.4.0

cpe:2.3:a:pypdf_project:pypdf:2.4.0
Pypdf Project » Pypdf » Version: 2.4.1

cpe:2.3:a:pypdf_project:pypdf:2.4.1
Pypdf Project » Pypdf » Version: 2.4.2

cpe:2.3:a:pypdf_project:pypdf:2.4.2
Pypdf Project » Pypdf » Version: 2.5.0

cpe:2.3:a:pypdf_project:pypdf:2.5.0
Pypdf Project » Pypdf » Version: 2.6.0

cpe:2.3:a:pypdf_project:pypdf:2.6.0
Pypdf Project » Pypdf » Version: 2.7.0

cpe:2.3:a:pypdf_project:pypdf:2.7.0
Pypdf Project » Pypdf » Version: 2.8.0

cpe:2.3:a:pypdf_project:pypdf:2.8.0
Pypdf Project » Pypdf » Version: 2.8.1

cpe:2.3:a:pypdf_project:pypdf:2.8.1
Pypdf Project » Pypdf » Version: 2.9.0

cpe:2.3:a:pypdf_project:pypdf:2.9.0
Pypdf Project » Pypdf » Version: 3.0.0

cpe:2.3:a:pypdf_project:pypdf:3.0.0
Pypdf Project » Pypdf » Version: 3.1.0

cpe:2.3:a:pypdf_project:pypdf:3.1.0
Pypdf Project » Pypdf » Version: 3.10.0

cpe:2.3:a:pypdf_project:pypdf:3.10.0
Pypdf Project » Pypdf » Version: 3.11.0

cpe:2.3:a:pypdf_project:pypdf:3.11.0
Pypdf Project » Pypdf » Version: 3.11.1

cpe:2.3:a:pypdf_project:pypdf:3.11.1
Pypdf Project » Pypdf » Version: 3.12.0

cpe:2.3:a:pypdf_project:pypdf:3.12.0
Pypdf Project » Pypdf » Version: 3.12.1

cpe:2.3:a:pypdf_project:pypdf:3.12.1
Pypdf Project » Pypdf » Version: 3.12.2

cpe:2.3:a:pypdf_project:pypdf:3.12.2
Pypdf Project » Pypdf » Version: 3.13.0

cpe:2.3:a:pypdf_project:pypdf:3.13.0
Pypdf Project » Pypdf » Version: 3.14.0

cpe:2.3:a:pypdf_project:pypdf:3.14.0
Pypdf Project » Pypdf » Version: 3.15.0

cpe:2.3:a:pypdf_project:pypdf:3.15.0
Pypdf Project » Pypdf » Version: 3.15.1

cpe:2.3:a:pypdf_project:pypdf:3.15.1
Pypdf Project » Pypdf » Version: 3.15.2

cpe:2.3:a:pypdf_project:pypdf:3.15.2
Pypdf Project » Pypdf » Version: 3.15.3

cpe:2.3:a:pypdf_project:pypdf:3.15.3
Pypdf Project » Pypdf » Version: 3.15.4

cpe:2.3:a:pypdf_project:pypdf:3.15.4
Pypdf Project » Pypdf » Version: 3.15.5

cpe:2.3:a:pypdf_project:pypdf:3.15.5
Pypdf Project » Pypdf » Version: 3.16.0

cpe:2.3:a:pypdf_project:pypdf:3.16.0
Pypdf Project » Pypdf » Version: 3.16.1

cpe:2.3:a:pypdf_project:pypdf:3.16.1
Pypdf Project » Pypdf » Version: 3.16.2

cpe:2.3:a:pypdf_project:pypdf:3.16.2
Pypdf Project » Pypdf » Version: 3.16.3

cpe:2.3:a:pypdf_project:pypdf:3.16.3
Pypdf Project » Pypdf » Version: 3.16.4

cpe:2.3:a:pypdf_project:pypdf:3.16.4
Pypdf Project » Pypdf » Version: 3.17.0

cpe:2.3:a:pypdf_project:pypdf:3.17.0
Pypdf Project » Pypdf » Version: 3.17.1

cpe:2.3:a:pypdf_project:pypdf:3.17.1
Pypdf Project » Pypdf » Version: 3.17.2

cpe:2.3:a:pypdf_project:pypdf:3.17.2
Pypdf Project » Pypdf » Version: 3.17.3

cpe:2.3:a:pypdf_project:pypdf:3.17.3
Pypdf Project » Pypdf » Version: 3.17.4

cpe:2.3:a:pypdf_project:pypdf:3.17.4
Pypdf Project » Pypdf » Version: 3.2.0

cpe:2.3:a:pypdf_project:pypdf:3.2.0
Pypdf Project » Pypdf » Version: 3.2.1

cpe:2.3:a:pypdf_project:pypdf:3.2.1
Pypdf Project » Pypdf » Version: 3.3.0

cpe:2.3:a:pypdf_project:pypdf:3.3.0
Pypdf Project » Pypdf » Version: 3.4.0

cpe:2.3:a:pypdf_project:pypdf:3.4.0
Pypdf Project » Pypdf » Version: 3.4.1

cpe:2.3:a:pypdf_project:pypdf:3.4.1
Pypdf Project » Pypdf » Version: 3.5.0

cpe:2.3:a:pypdf_project:pypdf:3.5.0
Pypdf Project » Pypdf » Version: 3.5.1

cpe:2.3:a:pypdf_project:pypdf:3.5.1
Pypdf Project » Pypdf » Version: 3.5.2

cpe:2.3:a:pypdf_project:pypdf:3.5.2
Pypdf Project » Pypdf » Version: 3.6.0

cpe:2.3:a:pypdf_project:pypdf:3.6.0
Pypdf Project » Pypdf » Version: 3.7.0

cpe:2.3:a:pypdf_project:pypdf:3.7.0
Pypdf Project » Pypdf » Version: 3.7.1

cpe:2.3:a:pypdf_project:pypdf:3.7.1
Pypdf Project » Pypdf » Version: 3.8.0

cpe:2.3:a:pypdf_project:pypdf:3.8.0
Pypdf Project » Pypdf » Version: 3.8.1

cpe:2.3:a:pypdf_project:pypdf:3.8.1
Pypdf Project » Pypdf » Version: 3.9.0

cpe:2.3:a:pypdf_project:pypdf:3.9.0
Pypdf Project » Pypdf » Version: 3.9.1

cpe:2.3:a:pypdf_project:pypdf:3.9.1
Pypdf Project » Pypdf » Version: 4.0.0

cpe:2.3:a:pypdf_project:pypdf:4.0.0
Pypdf Project » Pypdf » Version: 4.0.1

cpe:2.3:a:pypdf_project:pypdf:4.0.1
Pypdf Project » Pypdf » Version: 4.0.2

cpe:2.3:a:pypdf_project:pypdf:4.0.2
Pypdf Project » Pypdf » Version: 4.1.0

cpe:2.3:a:pypdf_project:pypdf:4.1.0
Pypdf Project » Pypdf » Version: 4.2.0

cpe:2.3:a:pypdf_project:pypdf:4.2.0
Pypdf Project » Pypdf » Version: 4.3.0

cpe:2.3:a:pypdf_project:pypdf:4.3.0
Pypdf Project » Pypdf » Version: 4.3.1

cpe:2.3:a:pypdf_project:pypdf:4.3.1
Pypdf Project » Pypdf » Version: 5.0.0

cpe:2.3:a:pypdf_project:pypdf:5.0.0
Pypdf Project » Pypdf » Version: 5.0.1

cpe:2.3:a:pypdf_project:pypdf:5.0.1
Pypdf Project » Pypdf » Version: 5.1.0

cpe:2.3:a:pypdf_project:pypdf:5.1.0
Pypdf Project » Pypdf » Version: 5.2.0

cpe:2.3:a:pypdf_project:pypdf:5.2.0
Pypdf Project » Pypdf » Version: 5.3.0

cpe:2.3:a:pypdf_project:pypdf:5.3.0
Pypdf Project » Pypdf » Version: 5.3.1

cpe:2.3:a:pypdf_project:pypdf:5.3.1
Pypdf Project » Pypdf » Version: 5.4.0

cpe:2.3:a:pypdf_project:pypdf:5.4.0
Pypdf Project » Pypdf » Version: 5.5.0

cpe:2.3:a:pypdf_project:pypdf:5.5.0
Pypdf Project » Pypdf » Version: 5.6.0

cpe:2.3:a:pypdf_project:pypdf:5.6.0
Pypdf Project » Pypdf » Version: 5.6.1

cpe:2.3:a:pypdf_project:pypdf:5.6.1
Pypdf Project » Pypdf » Version: 5.7.0

cpe:2.3:a:pypdf_project:pypdf:5.7.0
Pypdf Project » Pypdf » Version: 5.8.0

cpe:2.3:a:pypdf_project:pypdf:5.8.0
Pypdf Project » Pypdf » Version: 5.9.0

cpe:2.3:a:pypdf_project:pypdf:5.9.0
Pypdf Project » Pypdf » Version: 6.0.0

cpe:2.3:a:pypdf_project:pypdf:6.0.0
Pypdf Project » Pypdf » Version: 6.1.0

cpe:2.3:a:pypdf_project:pypdf:6.1.0
Pypdf Project » Pypdf » Version: 6.1.1

cpe:2.3:a:pypdf_project:pypdf:6.1.1
Pypdf Project » Pypdf » Version: 6.1.2

cpe:2.3:a:pypdf_project:pypdf:6.1.2
Pypdf Project » Pypdf » Version: 6.1.3

cpe:2.3:a:pypdf_project:pypdf:6.1.3
Pypdf Project » Pypdf » Version: 6.2.0

cpe:2.3:a:pypdf_project:pypdf:6.2.0
Pypdf Project » Pypdf » Version: 6.3.0

cpe:2.3:a:pypdf_project:pypdf:6.3.0
Pypdf Project » Pypdf » Version: 6.4.0

cpe:2.3:a:pypdf_project:pypdf:6.4.0
Pypdf Project » Pypdf » Version: 6.4.1

cpe:2.3:a:pypdf_project:pypdf:6.4.1
Pypdf Project » Pypdf » Version: 6.4.2

cpe:2.3:a:pypdf_project:pypdf:6.4.2
Pypdf Project » Pypdf » Version: 6.5.0

cpe:2.3:a:pypdf_project:pypdf:6.5.0

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-22691

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