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CVE-2023-26303— markdown-it-py crash on null assertions

Quick assessment

Affected
Executable Books markdown-it-py
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.

markdown-it-py是Executable Books开源的一个 Markdown 解析器。 markdown-it-py v2.2.0之前版本存在安全漏洞，该漏洞源于如果允许攻击者使用特制输入强制执行空断言，可能会导致拒绝服务。

CVSS 3.3 · Low EPSS 0.23% · P12

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-26303

Vulnerability Information
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Vulnerability Title
markdown-it-py crash on null assertions
Source: CVE Program / CVE List V5
Vulnerability Description
Denial of service could be caused to markdown-it-py, before v2.2.0, if an attacker was allowed to force null assertions with specially crafted input.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
候选编码方案处理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
markdown-it-py 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
markdown-it-py是Executable Books开源的一个 Markdown 解析器。 markdown-it-py v2.2.0之前版本存在安全漏洞，该漏洞源于如果允许攻击者使用特制输入强制执行空断言，可能会导致拒绝服务。
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
Executable Books markdown-it-py 0 ~ v2.2.0 -

II. Public POCs for CVE-2023-26303

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III. Intelligence Information for CVE-2023-26303

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Patches & Fixes for CVE-2023-26303 (1)

IV. Related Vulnerabilities

Same product: markdown-it-py
Same vendor: Executable Books
Same weakness: CWE-173

V. Comments for CVE-2023-26303

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