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stomper — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2026-26445

stomper 5e2741e is vulnerable to Denial of Service. A malicious client can send partial STOMP frames and keep the TCP connections open, which, combined with the broker s use of edge-triggered epoll (EPOLLET) and MSG_PEEK in recv(), causes sockets to enter a permanent half-read state. When enough such connections accumulate, the broker stops receiving any further epoll events for those sockets and eventually hangs in epoll_wait, effectively refusing to process new messages.

Products
stomper
Affected versions
0.3.0-1, 0.4.1-2, 0.4.3-1, 0.4.3-2, 0.4.3-3, 0.4.3-3build1
Fixed versions
Not specified
CVEs
CVE-2026-26445
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 00:56 UTC · Revision 1

Source evidence

UBUNTU-CVE-2026-26445

core-osv · Original source

Published 26 Aug 2026, 20:17 UTC

stomper 5e2741e is vulnerable to Denial of Service. A malicious client can send partial STOMP frames and keep the TCP connections open, which, combined with the broker s use of edge-triggered epoll (EPOLLET) and MSG_PEEK in recv(), causes sockets to enter a permanent half-read state. When enough such connections accumulate, the broker stops receiving any further epoll events for those sockets and eventually hangs in epoll_wait, effectively refusing to process new messages.

osv:UBUNTU-CVE-2026-26445

stomper

Fixed versions: Not specified

stomper

Fixed versions: Not specified

stomper

Fixed versions: Not specified

stomper

Fixed versions: Not specified

stomper

Fixed versions: Not specified

stomper

Fixed versions: Not specified

stomper

Fixed versions: Not specified

Complete source record
{
  "id": "2ebde506322d9ada8a42c4b33c1bd83a5e27f8f835827a9d6ea9c5f120f32c3c",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-26445",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2026-26445",
    "summary": "stomper 5e2741e is vulnerable to Denial of Service. A malicious client can send partial STOMP frames and keep the TCP connections open, which, combined with the broker s use of edge-triggered epoll (EPOLLET) and MSG_PEEK in recv(), causes sockets to enter a permanent half-read state. When enough such connections accumulate, the broker stops receiving any further epoll events for those sockets and eventually hangs in epoll_wait, effectively refusing to process new messages.",
    "evidence": "osv:UBUNTU-CVE-2026-26445",
    "products": [
      {
        "name": {
          "value": "stomper",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.3.0-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "stomper",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.3.0-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "stomper",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.4.1-2",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "stomper",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.4.1-2",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "0.4.3-1",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "stomper",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.4.3-2",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "0.4.3-3",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "stomper",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.4.3-3build1",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "stomper",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.4.3-3",
            "evidence": "/affected/6/versions"
          },
          {
            "value": "0.4.3-3build1",
            "evidence": "/affected/6/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "UBUNTU-CVE-2026-26445",
      "aliases": [
        "UBUNTU-CVE-2026-26445"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "stomper",
            "purl": "pkg:deb/ubuntu/stomper?arch=source&distro=xenial",
            "ecosystem": "Ubuntu:16.04:LTS"
          },
          "versions": [
            "0.3.0-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26445.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python-stomper",
                "binary_version": "0.3.0-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "stomper",
            "purl": "pkg:deb/ubuntu/stomper?arch=source&distro=bionic",
            "ecosystem": "Ubuntu:18.04:LTS"
          },
          "versions": [
            "0.3.0-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26445.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python-stomper",
                "binary_version": "0.3.0-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "stomper",
            "purl": "pkg:deb/ubuntu/stomper?arch=source&distro=focal",
            "ecosystem": "Ubuntu:20.04:LTS"
          },
          "versions": [
            "0.4.1-2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26445.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python3-stomper",
                "binary_version": "0.4.1-2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "stomper",
            "purl": "pkg:deb/ubuntu/stomper?arch=source&distro=jammy",
            "ecosystem": "Ubuntu:22.04:LTS"
          },
          "versions": [
            "0.4.1-2",
            "0.4.3-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26445.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python3-stomper",
                "binary_version": "0.4.3-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "stomper",
            "purl": "pkg:deb/ubuntu/stomper?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "0.4.3-2",
            "0.4.3-3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26445.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python3-stomper",
                "binary_version": "0.4.3-3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "stomper",
            "purl": "pkg:deb/ubuntu/stomper?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "0.4.3-3build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26445.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python3-stomper",
                "binary_version": "0.4.3-3build1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "stomper",
            "purl": "pkg:deb/ubuntu/stomper?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "0.4.3-3",
            "0.4.3-3build1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-26445.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "python3-stomper",
                "binary_version": "0.4.3-3build1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:56:18.055870733Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-26445"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2026-26445",
        "https://www.cve.org/CVERecord?id=CVE-2026-26445"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-26445",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 355170,
  "published_at": "2026-08-26T20:17:00+00:00"
}