CVE-2026-112300

DiffSK configobj __init__.py _sectionmarker redos

State: Published
Severity: 6.9 Medium
Published: Oct 19, 2026
Updated: Oct 20, 2026
Reserved: Oct 19, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:C	VulDB
3.0	5.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:C	VulDB
2.0	5.0 Medium	AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:ND/RC:C	VulDB

Weaknesses

CWE-1333 Inefficient Regular Expression Complexity
CWE-400 Resource Consumption

Affected Products

Product	Versions
configobjDiffSK	5.0.0Affected 5.0.1Affected 5.0.2Affected 5.0.3Affected 5.0.4Affected 5.0.5Affected 5.0.6Affected 5.0.7Affected 5.0.8Affected 5.0.9Affected

References

VDB-422346 | DiffSK configobj __init__.py _sectionmarker redosvdb-entrytechnical-description
VDB-422346 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-112300 | CVE Analysis and Reportthird-party-advisory
Submit #989395 | DiffSK configobj 5.0.9 Denial of Servicethird-party-advisory
https://github.com/DiffSK/configobj/issues/281issue-tracking
https://github.com/DiffSK/configobj/product

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