CVE-2026-112300 Details
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.
A denial-of-service vulnerability has been identified in DiffSK Configobj versions through 5.0.9. The issue arises in the function '_sectionmarker' within 'configobj/__init__.py', where an inefficient regular expression allows for quadratic backtracking. This vulnerability can be exploited remotely, leading to excessive CPU consumption. Applications that parse untrusted or attacker-influenced configurations with Configobj may be driven into a state of CPU exhaustion.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 19, 2026CISA-ADP
Assessed Oct 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/DiffSK/configobj/ | [email protected] | ProductVendor |
| https://github.com/DiffSK/configobj/issues/281 | [email protected] | ExploitIssue TrackingTechnical DescriptionVendor |
| https://vuldb.com/cve/CVE-2026-112300 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/989395 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/422346 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/422346/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-1333 | Inefficient Regular Expression Complexity | [email protected] |
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| DiffSK configobj | <= 5.0.9 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 20, 2026 | CVE Modified | CISA-ADP |
| Oct 19, 2026 | New CVE Received | [email protected] |