# CVE-2023-26112: configobj: All versions of the package configobj are vulnerable to Regular Expression Denial of Service (ReDoS) via the validate...

CVE-2023-26112 is fixed in 3 products on 1 platform, first by python-configobj 5.0.6-2ubuntu0.18.04.1~esm1, released April 2, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-26112
- Priority: Routine
- CVSS: 5.9 (medium)
- EPSS: 0.0127
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 2, 2023

## Description

All versions of the package configobj are vulnerable to Regular Expression Denial of Service (ReDoS) via the validate function, using (.+?)\((.*)\).  **Note:** This is only exploitable in the case of a developer, putting the offending value in a server side configuration file.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | configobj Debian 13.5 (trixie) | 5.0.8-2 | [DEBIAN-CVE-2023-26112](https://patchblox.com/security/data/fix/linux/debian-cve-2023-26112.md) | Apr 3, 2023 |
| Linux | configobj Debian 14 | 5.0.8-2 | [DEBIAN-CVE-2023-26112](https://patchblox.com/security/data/fix/linux/debian-cve-2023-26112.md) | Apr 3, 2023 |
| Linux | python-configobj Ubuntu 18.04.6 LTS (bionic) | 5.0.6-2ubuntu0.18.04.1~esm1 | [python-configobj 5.0.6-2ubuntu0.18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-configobj-5.0.6-2ubuntu0.18.04.1-esm1.md) | Apr 2, 2023 |
| Linux | python3-configobj Ubuntu 18.04.6 LTS (bionic) | 5.0.6-2ubuntu0.18.04.1~esm1 | [python3-configobj 5.0.6-2ubuntu0.18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-configobj-5.0.6-2ubuntu0.18.04.1-esm1.md) | Apr 2, 2023 |
| Linux | python3-configobj Ubuntu 20.04 LTS (focal) | 5.0.6-4ubuntu0.1 | [python3-configobj 5.0.6-4ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-configobj-5.0.6-4ubuntu0.1.md) | Apr 2, 2023 |
| Linux | python3-configobj Ubuntu 22.04.1 LTS (jammy) | 5.0.6-5ubuntu0.1 | [python3-configobj 5.0.6-5ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-python3-configobj-5.0.6-5ubuntu0.1.md) | Apr 2, 2023 |
| Linux | python3-configobj amzn 2023 | 5.0.6-23.amzn2023.0.3 | [ALAS2023-2023-254](https://patchblox.com/security/data/fix/linux/alas2023-2023-254.md) | Jul 17, 2023 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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