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CVE-2026-56304— picklescan - Arbitrary File Creation via logging.FileHandler Deserialization

Quick assessment

Affected
picklescan picklescan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

picklescan picklescan是picklescan公司的一款Python反序列化漏洞扫描工具。 picklescan 1.0.1之前版本存在反序列化漏洞，该漏洞源于不安全的pickle反序列化，允许未经身份验证的攻击者通过logging.FileHandler类实例化创建任意零字节文件。攻击者可以通过制作恶意pickle有效载荷绕过RCE黑名单，创建锁文件或其他文件系统工件，可能导致拒绝服务或应用程序中断。

CVSS 6.5 · Medium EPSS 0.44% · P36

Affected Version Matrix 2

VendorProduct Version RangeStatus
picklescan picklescan < 1.0.1 affected
1.0.1 unaffected
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I. Basic Information for CVE-2026-56304

Vulnerability Information
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Vulnerability Title
picklescan - Arbitrary File Creation via logging.FileHandler Deserialization
Source: CVE Program / CVE List V5
Vulnerability Description
picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malicious pickle payloads to bypass RCE blocklists and create lock files or other filesystem artifacts, potentially causing denial of service or application disruption.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
picklescan 反序列化漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
picklescan picklescan是picklescan公司的一款Python反序列化漏洞扫描工具。 picklescan 1.0.1之前版本存在反序列化漏洞，该漏洞源于不安全的pickle反序列化，允许未经身份验证的攻击者通过logging.FileHandler类实例化创建任意零字节文件。攻击者可以通过制作恶意pickle有效载荷绕过RCE黑名单，创建锁文件或其他文件系统工件，可能导致拒绝服务或应用程序中断。
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
picklescan picklescan 0 ~ 1.0.1 -

II. Public POCs for CVE-2026-56304

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III. Intelligence Information for CVE-2026-56304

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Vendor Advisories for CVE-2026-56304 (2)

IV. Related Vulnerabilities

Same product: picklescan
Same vendor: picklescan
Same weakness: CWE-502

V. Comments for CVE-2026-56304

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