PYSEC-2026-1270

Vulnerability from pysec - Published: 2026-07-07 11:45 - Updated: 2026-07-07 17:23
VLAI
Details

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.

Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Impacted products
Name purl
configobj pkg:pypi/configobj
Aliases
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "configobj",
        "purl": "pkg:pypi/configobj"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.0.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.4.0",
        "4.5.0",
        "4.5.1",
        "4.5.2",
        "4.5.3",
        "4.6.0",
        "4.7.0",
        "4.7.1",
        "4.7.2",
        "5.0.0",
        "5.0.1",
        "5.0.2",
        "5.0.3",
        "5.0.4",
        "5.0.5",
        "5.0.6",
        "5.0.7",
        "5.0.8"
      ]
    }
  ],
  "aliases": [
    "CVE-2023-26112",
    "GHSA-c33w-24p9-8m24"
  ],
  "details": "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.",
  "id": "PYSEC-2026-1270",
  "modified": "2026-07-07T17:23:57.163337Z",
  "published": "2026-07-07T11:45:17.786428Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-26112"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DiffSK/configobj/issues/232"
    },
    {
      "type": "WEB",
      "url": "https://github.com/DiffSK/configobj/commit/7c618b0bbaff6ecaca51a6f05b29795d1377a4a5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/DiffSK/configobj"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6BO4RLMYEJODCNUE3DJIIUUFVTPAG6VN"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NZHY7B33EFY4LESP2NI4APQUPRROTAZK"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PYU4IHVLOTYMFPH7KDOJGKZQR4GKWPFK"
    },
    {
      "type": "WEB",
      "url": "https://pypi.org/project/configobj/5.0.9"
    },
    {
      "type": "WEB",
      "url": "https://security.snyk.io/vuln/SNYK-PYTHON-CONFIGOBJ-3252494"
    },
    {
      "type": "PACKAGE",
      "url": "https://pypi.org/project/configobj"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-c33w-24p9-8m24"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "configobj ReDoS exploitable by developer using values in a server-side configuration file"
}



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