What’s Vulnerable › Vulnerabilities

CVE-2026-112300: DiffSK configobj __init__.py _sectionmarker redos

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-20
• Weakness: CWE-400

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.

Affected products

• DiffSK configobj: 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5 (+4)

References

• https://github.com/DiffSK/configobj/
• https://github.com/DiffSK/configobj/issues/281
• https://vuldb.com/cve/CVE-2026-112300
• https://vuldb.com/submit/989395
• https://vuldb.com/vuln/422346
• https://vuldb.com/vuln/422346/cti

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