DiffSK configobj __init__.py _sectionmarker redos

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-112300
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-19 21:17:06 UTC
Updated2026-10-19 21:17:06 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 6.9 MEDIUM from [email protected]

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-400 | CWE-1333 | CWE-1333 Inefficient Regular Expression Complexity | CWE-400 Resource Consumption

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6.9MEDIUMCVSS: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/C...
4.0CNADECLARED6.9MEDIUMCVSS: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
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:C
3.0CNADECLARED5.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:C
2.0[email protected]Secondary5AV:N/AC:L/Au:N/C:N/I:N/A:P
2.0CNADECLARED5AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:ND/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA DiffSK Configobj affected 5.0.0 Not specified
CNA DiffSK Configobj affected 5.0.1 Not specified
CNA DiffSK Configobj affected 5.0.2 Not specified
CNA DiffSK Configobj affected 5.0.3 Not specified
CNA DiffSK Configobj affected 5.0.4 Not specified
CNA DiffSK Configobj affected 5.0.5 Not specified
CNA DiffSK Configobj affected 5.0.6 Not specified
CNA DiffSK Configobj affected 5.0.7 Not specified
CNA DiffSK Configobj affected 5.0.8 Not specified
CNA DiffSK Configobj affected 5.0.9 Not specified

References

ReferenceSourceLinkTags
vuldb.com/submit/989395 [email protected] vuldb.com
github.com/DiffSK/configobj [email protected] github.com
vuldb.com/cve/CVE-2026-112300 [email protected] vuldb.com
vuldb.com/vuln/422346 [email protected] vuldb.com
vuldb.com/vuln/422346/cti [email protected] vuldb.com
github.com/DiffSK/configobj/issues/281 [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Mohammedix88 (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-19T00:00:00.000ZAdvisory disclosed
CNA2026-10-19T02:00:00.000ZVulDB entry created
CNA2026-10-19T16:09:53.000ZVulDB entry last update

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