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Security update for python311

Type: advisorySources: OSV

This update for python311 fixes the following issues: - CVE-2026-15310: memory exhaustion in zipfile in bzip2/LZMA/Zstandard decompression (bsc#1277111). - CVE-2026-15806: urllib.request.HTTPPasswordMgr credentials for one URL scheme sent over another scheme (bsc#1276223). - CVE-2026-17084: StringPrep algorithm considered Unicode codepoint attributes outside Unicode 3.2.0 (bsc#1276226). - CVE-2026-19445: reassigned SNI callbacks with unreferenced SSLContext instances can cause use-after-free (bsc#1283969). - CVE-2026-19553: omitted server_hostname arguments in wrap_bio() can cause silent hostname verification bypasses (bsc#1283826). - CVE-2026-19672: tarfile extraction filter bypass allows creation of directories outside the destination (bsc#1276227). - CVE-2026-82049: tarfile extraction filters mishandle archives containing a hard link to a symbolic link, allowing file modification and content disclosure (bsc#1280459). Changes for python311: - Update to 3.11.17: - Security - gh-158446: Fix a crash or incorrect output that could occur when formatting a float or complex with a precision close to the platform's INT_MAX. PyOS_double_to_string() now raises ValueError for any precision of that magnitude, regardless of presentation type or value, as the format string parsers already did for precisions above INT_MAX. - gh-157190: Fixed a vulnerability in the tarfile data and tar extraction filters where a crafted archive using a hard link to a symbolic link could change the permissi

Products
python311, python311-core
Affected versions
Not specified
Fixed versions
3.11.17-slfo.1.1_1.1
CVEs
CVE-2026-15310, CVE-2026-15806, CVE-2026-17084, CVE-2026-19445, CVE-2026-19553, CVE-2026-19672, CVE-2026-82049
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 18:48 UTC · Revision 1

Source evidence

Security update for python311

core-osv · Original source

Published 19 Oct 2026, 10:15 UTC

This update for python311 fixes the following issues: - CVE-2026-15310: memory exhaustion in zipfile in bzip2/LZMA/Zstandard decompression (bsc#1277111). - CVE-2026-15806: urllib.request.HTTPPasswordMgr credentials for one URL scheme sent over another scheme (bsc#1276223). - CVE-2026-17084: StringPrep algorithm considered Unicode codepoint attributes outside Unicode 3.2.0 (bsc#1276226). - CVE-2026-19445: reassigned SNI callbacks with unreferenced SSLContext instances can cause use-after-free (bsc#1283969). - CVE-2026-19553: omitted server_hostname arguments in wrap_bio() can cause silent hostname verification bypasses (bsc#1283826). - CVE-2026-19672: tarfile extraction filter bypass allows creation of directories outside the destination (bsc#1276227). - CVE-2026-82049: tarfile extraction filters mishandle archives containing a hard link to a symbolic link, allowing file modification and content disclosure (bsc#1280459). Changes for python311: - Update to 3.11.17: - Security - gh-158446: Fix a crash or incorrect output that could occur when formatting a float or complex with a precision close to the platform's INT_MAX. PyOS_double_to_string() now raises ValueError for any precision of that magnitude, regardless of presentation type or value, as the format string parsers already did for precisions above INT_MAX. - gh-157190: Fixed a vulnerability in the tarfile data and tar extraction filters where a crafted archive using a hard link to a symbolic link could change the permissi

osv:SUSE-SU-2026:24280-1

python311

Fixed versions: 3.11.17-slfo.1.1_1.1

python311-core

Fixed versions: 3.11.17-slfo.1.1_1.1

Complete source record
{
  "id": "b982e957ffd59927306dbfbd23b7be62d0ec3c6d10b311494c95c69f3f9e8941",
  "url": "https://osv.dev/vulnerability/SUSE-SU-2026%3A24280-1",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Security update for python311",
    "summary": "This update for python311 fixes the following issues: - CVE-2026-15310: memory exhaustion in zipfile in bzip2/LZMA/Zstandard decompression (bsc#1277111). - CVE-2026-15806: urllib.request.HTTPPasswordMgr credentials for one URL scheme sent over another scheme (bsc#1276223). - CVE-2026-17084: StringPrep algorithm considered Unicode codepoint attributes outside Unicode 3.2.0 (bsc#1276226). - CVE-2026-19445: reassigned SNI callbacks with unreferenced SSLContext instances can cause use-after-free (bsc#1283969). - CVE-2026-19553: omitted server_hostname arguments in wrap_bio() can cause silent hostname verification bypasses (bsc#1283826). - CVE-2026-19672: tarfile extraction filter bypass allows creation of directories outside the destination (bsc#1276227). - CVE-2026-82049: tarfile extraction filters mishandle archives containing a hard link to a symbolic link, allowing file modification and content disclosure (bsc#1280459). Changes for python311: - Update to 3.11.17: - Security - gh-158446: Fix a crash or incorrect output that could occur when formatting a float or complex with a precision close to the platform's INT_MAX. PyOS_double_to_string() now raises ValueError for any precision of that magnitude, regardless of presentation type or value, as the format string parsers already did for precisions above INT_MAX. - gh-157190: Fixed a vulnerability in the tarfile data and tar extraction filters where a crafted archive using a hard link to a symbolic link could change the permissi",
    "evidence": "osv:SUSE-SU-2026:24280-1",
    "products": [
      {
        "name": {
          "value": "python311",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.11.17-slfo.1.1_1.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python311-core",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.11.17-slfo.1.1_1.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "SUSE-SU-2026:24280-1",
      "aliases": [
        "SUSE-SU-2026:24280-1"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.11.17-slfo.1.1_1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python311",
            "purl": "pkg:rpm/suse/python311&distro=SUSE%20Linux%20Micro%206.1",
            "ecosystem": "SUSE:Linux Micro 6.1"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:24280-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "python311": "3.11.17-slfo.1.1_1.1",
                "python311-base": "3.11.17-slfo.1.1_1.1",
                "python311-curses": "3.11.17-slfo.1.1_1.1",
                "libpython3_11-1_0": "3.11.17-slfo.1.1_1.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.11.17-slfo.1.1_1.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python311-core",
            "purl": "pkg:rpm/suse/python311-core&distro=SUSE%20Linux%20Micro%206.1",
            "ecosystem": "SUSE:Linux Micro 6.1"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:24280-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "python311": "3.11.17-slfo.1.1_1.1",
                "python311-base": "3.11.17-slfo.1.1_1.1",
                "python311-curses": "3.11.17-slfo.1.1_1.1",
                "libpython3_11-1_0": "3.11.17-slfo.1.1_1.1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-27T17:23:10.505232038Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-15310",
        "CVE-2026-15806",
        "CVE-2026-17084",
        "CVE-2026-19445",
        "CVE-2026-19553",
        "CVE-2026-19672",
        "CVE-2026-82049"
      ],
      "references": [
        "https://www.suse.com/support/update/announcement/2026/suse-su-202624280-1/",
        "https://bugzilla.suse.com/1276223",
        "https://bugzilla.suse.com/1276226",
        "https://bugzilla.suse.com/1276227",
        "https://bugzilla.suse.com/1277111",
        "https://bugzilla.suse.com/1280459",
        "https://bugzilla.suse.com/1283826",
        "https://bugzilla.suse.com/1283969",
        "https://www.suse.com/security/cve/CVE-2026-15310",
        "https://www.suse.com/security/cve/CVE-2026-15806",
        "https://www.suse.com/security/cve/CVE-2026-17084",
        "https://www.suse.com/security/cve/CVE-2026-19445",
        "https://www.suse.com/security/cve/CVE-2026-19553",
        "https://www.suse.com/security/cve/CVE-2026-19672",
        "https://www.suse.com/security/cve/CVE-2026-82049"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-15310",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-15806",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-17084",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-19445",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-19553",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-19672",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-82049",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 462910,
  "published_at": "2026-10-19T10:15:52+00:00"
}