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libxstream-java — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2020-26217

XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14.

Products
libxstream-java
Affected versions
Not specified
Fixed versions
1.4.14-1
CVEs
CVE-2020-26217
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 09:02 UTC · Revision 1

Source evidence

DEBIAN-CVE-2020-26217

core-osv · Original source

Published 16 Nov 2020, 21:15 UTC

XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14.

osv:DEBIAN-CVE-2020-26217

libxstream-java

Fixed versions: 1.4.14-1

libxstream-java

Fixed versions: 1.4.14-1

libxstream-java

Fixed versions: 1.4.14-1

Complete source record
{
  "id": "f84e1c8d86d4d43bd92b349ba538843125812f66f5aaef03adb97d75d19f10d8",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-26217",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2020-26217",
    "summary": "XStream before version 1.4.14 is vulnerable to Remote Code Execution.The vulnerability may allow a remote attacker to run arbitrary shell commands only by manipulating the processed input stream. Only users who rely on blocklists are affected. Anyone using XStream's Security Framework allowlist is not affected. The linked advisory provides code workarounds for users who cannot upgrade. The issue is fixed in version 1.4.14.",
    "evidence": "osv:DEBIAN-CVE-2020-26217",
    "products": [
      {
        "name": {
          "value": "libxstream-java",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.14-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libxstream-java",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.14-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "libxstream-java",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.4.14-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2020-26217",
      "aliases": [
        "DEBIAN-CVE-2020-26217"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.14-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxstream-java",
            "purl": "pkg:deb/debian/libxstream-java?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-26217.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.14-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxstream-java",
            "purl": "pkg:deb/debian/libxstream-java?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-26217.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.4.14-1"
                }
              ]
            }
          ],
          "package": {
            "name": "libxstream-java",
            "purl": "pkg:deb/debian/libxstream-java?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-26217.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-08T09:47:24.450291787Z",
      "provider": "osv",
      "upstream": [
        "CVE-2020-26217"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2020-26217"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2020-26217",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 98853,
  "published_at": "2020-11-16T21:15:12.893+00:00"
}