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CVE-2026-3637

Estado: AnalizadaMedia (4.3)—

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check the create_post channel permission during post edit operations which allows an authenticated attacker with revoked posting privileges to modify their existing posts via direct API requests to the post update and patch endpoints.. Mattermost Advisory ID: MMSA-2026-00627

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Mattermost — Mattermost Server

CWE

Referencias

JSON original (NVD)

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          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
            },
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          "version": "2.0.3",
          "timestamp": "2026-05-18T14:34:50.396017Z"
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          "userInteraction": "NONE",
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      "description": [
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  "lastModified": "2026-06-17T10:43:54.373",
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