CVE-2026-4915

mediumPriorität · verfolgen · 0EPSS 0.003 · 20. PerzentilEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.28% (20th) EPSS

CVSS 6.5 · medium

Is it mine?

23 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · bewertet 2026-10-27

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to filter nil elements from outgoing webhook attachment payloads before processing, which allows an authenticated user to cause a denial of service (server process termination) via a crafted webhook callback response containing a null attachment entry.. Mattermost Advisory ID: MMSA-2026-00641

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

6.5

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v3.16.5mediumAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · responsibledisclosure@mattermost.comAusnutzbarkeit 2.8 · Auswirkung 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Trackcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-754USCWE-754USCWE-754US

betroffene Produkte (23)

Betroffene Produkte und Versionsbereiche.

Mattermost Mattermost≤ 10.11.0 ≤10.11.14enisa_euvdEU
Mattermost Mattermost≤ 11.5.0 ≤11.5.3enisa_euvdEU
Mattermost Mattermost≤ 11.6.0 ≤11.6.0enisa_euvdEU
Mattermost Mattermost≤ 11.4.0 ≤11.4.4enisa_euvdEU
Mattermost Inc Mattermost10.11.0 → 10.11.14fstec_bduRU
Mattermost Inc Mattermost11.4.0 → 11.4.4fstec_bduRU
Mattermost Inc Mattermost11.5.0 → 11.5.3fstec_bduRU
Mattermost Inc Mattermost11.6.0 → 11.6.1fstec_bduRU
mattermost mattermost server10.11.0 → 10.11.15nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server11.4.0 → 11.4.5nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server11.5.0 → 11.5.4nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
mattermost mattermost server11.6.0 → 11.6.1nvdUScpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Go github.com/mattermost/mattermost-server10.11.0 → 10.11.15osvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server10.11.0+incompatible → 10.11.15+incompatibleosvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server11.4.0 → 11.4.5osvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server11.4.0+incompatible → 11.4.5+incompatibleosvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server11.5.0 → 11.5.4osvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server11.5.0+incompatible → 11.5.4+incompatibleosvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server11.6.0 → 11.6.1osvUSpkg:golang/github.com/mattermost/mattermost-server
Go github.com/mattermost/mattermost-server11.6.0+incompatible → 11.6.1+incompatibleosvUSpkg:golang/github.com/mattermost/mattermost-server

20 von 23 angezeigt

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

GHSA-5gmf-x7hg-97wfMattermost doesn't filter nil elements from outgoing webhook attachment payloads before processing2026-05-26ghsa · osvUS
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to filter nil elements from outgoing webhook attachment payloads before processing, which allows an authenticated user to cause a denial of service (server process termination) via a crafted webhook callback response containing a null attachment entry. Mattermost Advisory ID: MMSA-2026-00641
GO-2026-5845Mattermost doesn't filter nil elements from outgoing webhook attachment payloads before processing in github.com/mattermost/mattermost-server2026-07-07vendor · osvUS
Mattermost doesn't filter nil elements from outgoing webhook attachment payloads before processing in github.com/mattermost/mattermost-server

auch bekannt als (7)

Weitere Namen und Kennungen dieser Entität.

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvd enisa_euvd fstec_bdu osv nvd NVD CVE.org MITRE

veröffentlicht 2026-05-25geändert 2026-07-23

Referenzen (5)

Externe Belege — Patches, Meldungen, Analysen.

scry

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