CVE catalog
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 r
- Severity
- Medium · CVSS 6.9
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 - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.53% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | configobj | sid | 5.0.9-1 | vulnerable |
| Debian | configobj | forky | 5.0.9-1 | vulnerable |
| Debian | configobj | trixie | 5.0.9-1 | vulnerable |
| Debian | configobj | bookworm | 5.0.8-1 | vulnerable |
| Ubuntu | configobj | pro | 5.0.6-2 | vulnerable |
| Ubuntu | configobj | pro | 5.0.6-2ubuntu0.18.04.1~esm1 | vulnerable |
| Ubuntu | configobj | 20.04 | 5.0.6-3 | vulnerable |
| Ubuntu | configobj | 20.04 | 5.0.6-3build1 | vulnerable |
| Ubuntu | configobj | 20.04 | 5.0.6-4 | vulnerable |
| Ubuntu | configobj | 20.04 | 5.0.6-4ubuntu0.1 | vulnerable |
| Ubuntu | configobj | 22.04 | 5.0.6-4 | vulnerable |
| Ubuntu | configobj | 22.04 | 5.0.6-5 | vulnerable |
| Ubuntu | configobj | 22.04 | 5.0.6-5ubuntu0.1 | vulnerable |
| Ubuntu | configobj | 24.04 | 5.0.8-2 | vulnerable |
| Ubuntu | configobj | 24.04 | 5.0.8-3 | vulnerable |
| Ubuntu | configobj | 26.10 | 5.0.9-1build1 | vulnerable |
| Ubuntu | configobj | 26.04 | 5.0.9-1 | vulnerable |
| Ubuntu | configobj | 26.04 | 5.0.9-1build1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | configobj | source | sid | (unfixed) | unimportant | Not reported | Not reported |
| Debian | configobj | source | forky | (unfixed) | unimportant | Not reported | Not reported |
| Debian | configobj | source | trixie | (unfixed) | unimportant | Not reported | Not reported |
| Debian | configobj | source | bookworm | (unfixed) | unimportant | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [python3-configobj]Affected
Source package: [configobj]
Details (2)
5.0.8-1· all · bookwormAffected
nvd · configobj · debian · bookworm; nvd · configobj · debian · 12
5.0.8-1· all · bookwormAffected
nvd · configobj · debian · bookworm; nvd · configobj · debian · 12
- [python-configobj-doc]Affected
Source package: [configobj]
Details (2)
5.0.8-1· all · bookwormAffected
nvd · configobj · debian · bookworm; nvd · configobj · debian · 12
5.0.8-1· all · bookwormAffected
nvd · configobj · debian · bookworm; nvd · configobj · debian · 12
[Debian 13 (Trixie)]
- [python3-configobj]Affected
Source package: [configobj]
Details (2)
5.0.9-1· all · trixieAffected
nvd · configobj · debian · 13
5.0.9-1· all · trixieAffected
nvd · configobj · debian · 13
- [python-configobj-doc]Affected
Source package: [configobj]
Details (2)
5.0.9-1· all · trixieAffected
nvd · configobj · debian · 13
5.0.9-1· all · trixieAffected
nvd · configobj · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-112300]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-112300]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-112300]
- [https://security-tracker.debian.org/tracker/CVE-2026-112300]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-112300.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]