CVE-2026-39892— cryptography has a buffer overflow if non-contiguous buffers were passed to APIs
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I. Basic Information for CVE-2026-39892
Vulnerability Information
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Vulnerability Title
cryptography has a buffer overflow if non-contiguous buffers were passed to APIs
Source: NVD (National Vulnerability Database)
Vulnerability Description
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 45.0.0 to before 46.0.7, if a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. This vulnerability is fixed in 46.0.7.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
cryptography 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cryptography是Python Cryptographic Authority开源的一个Python的加密库。 cryptography 45.0.0至46.0.7之前版本存在安全漏洞，该漏洞源于缓冲区处理不当，可能导致缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| pyca | cryptography | >= 45.0.0, < 46.0.7 | - |
II. Public POCs for CVE-2026-39892
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
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