CVE-2026-119207：pypdf is a free and open-source pure-python PDF library. Prior to 6.21

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3.

漏洞详情

pypdf is a free and open-source pure-python PDF library. Prior to 6.21.3, pypdf can consume excessive memory when strict mode loads a crafted invalid PDF dictionary. Nested parsing failures add repeated exception text to newly raised errors, allowing a small malformed dictionary to amplify into very large error messages. This issue is fixed in version 6.21.3.

风险评估

• CVSS 评分：7.1（HIGH）
• 评分版本：CVSS 4.0
• 攻击向量：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

弱点类型

CWE-400、CWE-405

参考链接

• https://github.com/py-pdf/pypdf/commit/64270258c0eced720f7960aecf8cef31afd39f8d
• https://github.com/py-pdf/pypdf/pull/4265
• https://github.com/py-pdf/pypdf/releases/tag/6.21.3
• https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vqv-7265-gm2w

数据来源：NVD（美国国家漏洞数据库），入库时按 CVSS 评分筛选。

原文链接： CVE-2026-119207：pypdf is a free and open-source pure-python PDF library. Prior to 6.21