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Security update for python-urllib3

Type: advisorySources: OSV

This update for python-urllib3 fixes the following issues: - CVE-2026-97688: denial of service due to infinite loop during chunked Deflate decoding (bsc#1283909). - CVE-2026-97689: denial of service due to unbounded memory allocation in chunk parser (bsc#1283910).

Products
python-urllib3
Affected versions
Not specified
Fixed versions
1.25.10-3.54.1
CVEs
CVE-2026-97688, CVE-2026-97689
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 12:37 UTC · Revision 1

Source evidence

Security update for python-urllib3

core-osv · Original source

Published 13 Oct 2026, 16:49 UTC

This update for python-urllib3 fixes the following issues: - CVE-2026-97688: denial of service due to infinite loop during chunked Deflate decoding (bsc#1283909). - CVE-2026-97689: denial of service due to unbounded memory allocation in chunk parser (bsc#1283910).

osv:SUSE-SU-2026:4649-1

python-urllib3

Fixed versions: 1.25.10-3.54.1

python-urllib3

Fixed versions: 1.25.10-3.54.1

python-urllib3

Fixed versions: 1.25.10-3.54.1

Complete source record
{
  "id": "88f09a081b79b519a8b80d358196a0812c99ba5b6641c89eb7d4f6eb31c2b21b",
  "url": "https://osv.dev/vulnerability/SUSE-SU-2026%3A4649-1",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Security update for python-urllib3",
    "summary": "This update for python-urllib3 fixes the following issues: - CVE-2026-97688: denial of service due to infinite loop during chunked Deflate decoding (bsc#1283909). - CVE-2026-97689: denial of service due to unbounded memory allocation in chunk parser (bsc#1283910).",
    "evidence": "osv:SUSE-SU-2026:4649-1",
    "products": [
      {
        "name": {
          "value": "python-urllib3",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.25.10-3.54.1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-urllib3",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.25.10-3.54.1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "python-urllib3",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.25.10-3.54.1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "SUSE-SU-2026:4649-1",
      "aliases": [
        "SUSE-SU-2026:4649-1"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.25.10-3.54.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-urllib3",
            "purl": "pkg:rpm/suse/python-urllib3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2012",
            "ecosystem": "SUSE:Linux Enterprise Module for Public Cloud 12"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4649-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "python-urllib3": "1.25.10-3.54.1",
                "python3-urllib3": "1.25.10-3.54.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.25.10-3.54.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-urllib3",
            "purl": "pkg:rpm/suse/python-urllib3&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSS",
            "ecosystem": "SUSE:Linux Enterprise Server 12 SP5-LTSS"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4649-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "python-urllib3": "1.25.10-3.54.1",
                "python3-urllib3": "1.25.10-3.54.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.25.10-3.54.1"
                }
              ]
            }
          ],
          "package": {
            "name": "python-urllib3",
            "purl": "pkg:rpm/suse/python-urllib3&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5",
            "ecosystem": "SUSE:Linux Enterprise Server LTSS Extended Security 12 SP5"
          },
          "database_specific": {
            "source": "https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2026:4649-1.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "python-urllib3": "1.25.10-3.54.1",
                "python3-urllib3": "1.25.10-3.54.1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-14T17:30:08.611798909Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-97688",
        "CVE-2026-97689"
      ],
      "references": [
        "https://www.suse.com/support/update/announcement/2026/suse-su-20264649-1/",
        "https://bugzilla.suse.com/1283909",
        "https://bugzilla.suse.com/1283910",
        "https://www.suse.com/security/cve/CVE-2026-97688",
        "https://www.suse.com/security/cve/CVE-2026-97689"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-97688",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-97689",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 317527,
  "published_at": "2026-10-13T16:49:47+00:00"
}