CVEvulnerability

CVE-2026-119203

7.1 HIGH EPSS 0.22% Published 2026-10-29 Modified 2026-11-02 Official page ↗

Exploitation and prioritisation

EPSS
0.22% chance of exploitation in the next 30 days · in the top 87.3% of all CVEs (2026-11-03)
CISA SSVC: exploitation
none
CISA SSVC: automatable
no
CISA SSVC: technical impact
partial
EU Vulnerability Database
EUVD-2026-113374

Affected packages

EcosystemPackageVulnerableFixed inAdvisory
PyPIpypdf< 6.21.46.21.4GHSA-5849-834g-hvw5
Status
Analyzed
Published
2026-10-29
Last modified
2026-11-02
Assigner
[email protected]
CVSS 4.0 ([email protected])
7.1 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/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
CVSS 3.1 ([email protected])
5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weaknesses
CWE-835

Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.4, pypdf can enter an infinite loop while opening a crafted incomplete PDF whose standard cross-reference table reaches the end of the file without a trailer. The trailer search can repeatedly rewind to the same stream position instead of terminating when parsing makes no progress, blocking the processing thread. This issue is fixed in version 6.21.4.

Affected configurations

• py-pdf pypdf (< 6.21.4)

Related

Weakness · CWE (1)

  • CWE-835 Loop with Unreachable Exit Condition weakness

Referenced by GitHub Advisory · alias (1)

  • GHSA-5849-834g-hvw5 pypdf has possible infinite loop when hitting EOF in standard xref table during trailer search advisory · PyPI

References