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python: Fix of CVE-2026-0864

Type: advisorySources: OSV

- CVE-2026-0864: fix configuration injection in the ConfigParser module by normalizing all line endings (CR, CRLF and LF) to LF+TAB when writing multi-line values, so a carriage return in an attacker-controlled value can no longer inject unexpected keys and values into the written file

Products
python, python-devel, python-libs, python-test, python-tools, tkinter
Affected versions
Not specified
Fixed versions
2.6.6-70.el6.tuxcare.els29
CVEs
CVE-2026-0864
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 11:27 UTC · Revision 1

Source evidence

python: Fix of CVE-2026-0864

core-osv · Original source

Published 7 Sept 2026, 15:16 UTC

- CVE-2026-0864: fix configuration injection in the ConfigParser module by normalizing all line endings (CR, CRLF and LF) to LF+TAB when writing multi-line values, so a carriage return in an attacker-controlled value can no longer inject unexpected keys and values into the written file

osv:CLSA-2026-1788794163

python

Fixed versions: 2.6.6-70.el6.tuxcare.els29

python-devel

Fixed versions: 2.6.6-70.el6.tuxcare.els29

python-libs

Fixed versions: 2.6.6-70.el6.tuxcare.els29

python-test

Fixed versions: 2.6.6-70.el6.tuxcare.els29

python-tools

Fixed versions: 2.6.6-70.el6.tuxcare.els29

tkinter

Fixed versions: 2.6.6-70.el6.tuxcare.els29

Complete source record
{
  "id": "824402202283ec72e69a2c80e8e32e00e147563908920481428605a24d19cd88",
  "url": "https://osv.dev/vulnerability/CLSA-2026-1788794163",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "python: Fix of CVE-2026-0864",
    "summary": "- CVE-2026-0864: fix configuration injection in the ConfigParser module by normalizing all line endings (CR, CRLF and LF) to LF+TAB when writing multi-line values, so a carriage return in an attacker-controlled value can no longer inject unexpected keys and values into the written file",
    "evidence": "osv:CLSA-2026-1788794163",
    "products": [
      {
        "name": {
          "value": "python",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.6.6-70.el6.tuxcare.els29",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-devel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.6.6-70.el6.tuxcare.els29",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-libs",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.6.6-70.el6.tuxcare.els29",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-test",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.6.6-70.el6.tuxcare.els29",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-tools",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.6.6-70.el6.tuxcare.els29",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "tkinter",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.6.6-70.el6.tuxcare.els29",
            "evidence": "/affected/5/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CLSA-2026-1788794163",
      "aliases": [
        "CLSA-2026-1788794163"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.6.6-70.el6.tuxcare.els29"
                }
              ]
            }
          ],
          "package": {
            "name": "python",
            "purl": "pkg:rpm/tuxcare/python?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1788794163.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.6.6-70.el6.tuxcare.els29"
                }
              ]
            }
          ],
          "package": {
            "name": "python-devel",
            "purl": "pkg:rpm/tuxcare/python-devel?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1788794163.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.6.6-70.el6.tuxcare.els29"
                }
              ]
            }
          ],
          "package": {
            "name": "python-libs",
            "purl": "pkg:rpm/tuxcare/python-libs?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1788794163.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.6.6-70.el6.tuxcare.els29"
                }
              ]
            }
          ],
          "package": {
            "name": "python-test",
            "purl": "pkg:rpm/tuxcare/python-test?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1788794163.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.6.6-70.el6.tuxcare.els29"
                }
              ]
            }
          ],
          "package": {
            "name": "python-tools",
            "purl": "pkg:rpm/tuxcare/python-tools?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1788794163.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.6.6-70.el6.tuxcare.els29"
                }
              ]
            }
          ],
          "package": {
            "name": "tkinter",
            "purl": "pkg:rpm/tuxcare/tkinter?distro=oraclelinux-6",
            "ecosystem": "TuxCare:OracleLinux:6"
          },
          "database_specific": {
            "source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/oraclelinux6els/CLSA-2026-1788794163.json"
          }
        }
      ],
      "modified": "2026-10-26T09:31:55.106571030Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-0864"
      ],
      "references": [
        "https://errata.tuxcare.com/els_os/oraclelinux6els/CLSA-2026-1788794163.html",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-0864"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-0864",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 448959,
  "published_at": "2026-09-07T15:16:13+00:00"
}