CVE-2026-112300— DiffSK configobj __init__.py _sectionmarker redos
Quick assessment
Affected
DiffSK configobj
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.
在 DiffSK configobj 5.0.9 及以下版本中发现了一个漏洞。该漏洞影响 configobj/__init__.py 文件中的 _sectionmarker 函数。攻击者可通过操纵输入导致正则表达式复杂度异常（即正则表达式拒绝服务，ReDoS），从而实现远程利用。项目方已通过问题报告较早获知该问题，但截至目前尚未作出回应。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-112300
Vulnerability Information
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Vulnerability Title
DiffSK configobj __init__.py _sectionmarker redos
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in DiffSK configobj up to 5.0.9. Affected by this vulnerability is the function _sectionmarker of the file configobj/__init__.py. The manipulation leads to inefficient regular expression complexity. Remote exploitation of the attack is possible. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-112300
| # | POC Description | Source Link | Shenlong Link |
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Other References for CVE-2026-112300 (2)
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Same weakness: CWE-1333
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V. Comments for CVE-2026-112300
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