EUVD-2020-0106

🗓️ 07 Oct 2025 00:30:54Reported by EUVDType

Matrix Synapse before version 1.23.1 is vulnerable to injection attacks affecting federated messaging.

Reporter	Title	Published	Views	Family All 34
AlpineLinux	CVE-2020-26257	9 Dec 202018:25	–	alpinelinux
FreeBSD	py-matrix-synapse -- DoS on Federation API	9 Dec 202000:00	–	freebsd
Circl	CVE-2020-26257	9 Dec 202022:32	–	circl
CNNVD	Matrix Synapse 资源管理错误漏洞	9 Dec 202000:00	–	cnnvd
CNVD	Matrix Synapse License Issue Vulnerability	11 Dec 202000:00	–	cnvd
CVE	CVE-2020-26257	9 Dec 202018:25	–	cve
Cvelist	CVE-2020-26257 Denial of service attack via incorrect parameters to federation APIs	9 Dec 202018:25	–	cvelist
Debian CVE	CVE-2020-26257	9 Dec 202018:25	–	debiancve
Fedora	[SECURITY] Fedora 33 Update: matrix-synapse-1.24.0-1.fc33	19 Dec 202001:16	–	fedora
Fedora	[SECURITY] Fedora 32 Update: matrix-synapse-1.24.0-1.fc32	18 Dec 202019:45	–	fedora

[
  {
    "enisaIdVendor": [
      {
        "id": "3bbc9dbc-6c45-39f0-89b5-91e52c55ad67",
        "vendor": {
          "name": "matrix-org"
        }
      }
    ],
    "enisaIdProduct": [
      {
        "id": "b0cb2c53-2ca8-3c4a-883e-6c278963a275",
        "product": {
          "name": "synapse"
        },
        "product_version": "< 1.23.1"
      }
    ]
  }
]

Source	Link
github	www.github.com/matrix-org/synapse/security/advisories/GHSA-hxmp-pqch-c8mm
github	www.github.com/matrix-org/synapse/commit/3ce2f303f15f6ac3dc352298972dc6e04d9b7a8b
github	www.github.com/matrix-org/synapse/blob/develop/CHANGES.md
github	www.github.com/matrix-org/synapse/pull/8776
lists	www.lists.fedoraproject.org/archives/list/[email protected]/message/QR4MMYZKX5N5GYGH4H5LBUUC5TLAFHI7/
lists	www.lists.fedoraproject.org/archives/list/[email protected]/message/DBTIU3ZNBFWZ56V4X7JIAD33V5H2GOMC/
nvd	www.nvd.nist.gov/vuln/detail/CVE-2020-26257
github	www.github.com/pypa/advisory-database/tree/main/vulns/matrix-synapse/PYSEC-2020-236.yaml
suse	www.suse.com/security/cve/CVE-2020-26257.html
security	www.security.archlinux.org/CVE-2020-26257

07 Oct 2025 00:30Current

6.8Medium risk

Vulners AI Score6.8

CVSS 3.16.5

CVSS 24

EPSS0.0045