Resource exhaustion in Diffsk Configobj
CVE-2026-112300
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.
Vulnerability class: DoS (Denial of Service)
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Diffsk Configobj — versions 5.0.0, 5.0.1, 5.0.2
Weakness classification (CWE)
References
- vuldb.com/vuln/422346 (technical-description, vdb-entry)
- vuldb.com/vuln/422346/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-112300 (third-party-advisory)
- vuldb.com/submit/989395 (third-party-advisory)
- github.com/DiffSK/configobj/issues/281 (issue-tracking)
- github.com/DiffSK/configobj/ (product)
Frequently asked questions
- What is CVE-2026-112300?
- CVE-2026-112300 is a medium-severity vulnerability in Diffsk Configobj, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-10-19.
- How severe is CVE-2026-112300?
- Medium severity. CVSS v3 base score is 5.3 out of 10.