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CVE-2026-2454 DoS in Calls plugin via malformed msgpack in websocket request.

🗓️ 16 Mar 2026 20:10:16Reported by MattermostType 
cvelist
 cvelist
🔗 www.cve.org👁 59 Views

CVE-2026-2454 Denial of service in the Calls plugin via malformed msgpack in websocket requests; affects Mattermost versions ten eleven through eleven three.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
bdu_fstec
BDU FSTEC
Mattermost DoS
13 May 202600:00
–bdu_fstec
cnnvd
CNNVD
Mattermost 安全漏洞
16 Mar 202600:00
–cnnvd
cve
CVE
CVE-2026-2454
16 Mar 202620:10
–cve
euvd
EUVD
EUVD-2026-12510
16 Mar 202621:34
–euvd
mend
Mend
CVE-2026-2454
16 Mar 202620:10
–mend
nvd
NVD
CVE-2026-2454
16 Mar 202621:16
–nvd
osv_cga
osv_cga
CGA-2Q22-XHG5-V238
13 Oct 202613:15
–osv_cga
osv_cga
osv_cga
CGA-33RJ-WXJQ-J946
13 Oct 202613:15
–osv_cga
osv_cga
osv_cga
CGA-35QG-W3H5-8VF3
13 Oct 202613:15
–osv_cga
osv_cga
osv_cga
CGA-8HW8-F6V8-84RX
13 Oct 202613:15
–osv_cga
Rows per page
[
  {
    "defaultStatus": "unaffected",
    "product": "Mattermost",
    "vendor": "Mattermost",
    "versions": [
      {
        "lessThanOrEqual": "11.3.0",
        "status": "affected",
        "version": "11.3.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "11.2.2",
        "status": "affected",
        "version": "11.2.0",
        "versionType": "semver"
      },
      {
        "lessThanOrEqual": "10.11.10",
        "status": "affected",
        "version": "10.11.0",
        "versionType": "semver"
      },
      {
        "version": "11.4.0",
        "status": "unaffected"
      },
      {
        "version": "11.3.1",
        "status": "unaffected"
      },
      {
        "version": "11.2.3",
        "status": "unaffected"
      },
      {
        "version": "10.11.11",
        "status": "unaffected"
      }
    ]
  }
]

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