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CERT-FR: Unspecified vulnerability in Mattermost Server 11.7.x, 11.10.x and 11.11.x (CERTFR-2026-AVI-1380)

1 fonte(s) · 1 atualização(ões) · publicado 25/10/2026 21:00 · coletado há 4 dias

CERT-FR published advisory CERTFR-2026-AVI-1380 on a vulnerability in Mattermost Server. The advisory says an attacker could trigger an unspecified security issue, and the vendor does not state the impact. It is based on Mattermost security bulletin MMSA-2026-00759 of 23 October 2026. No CVE identifier, CVSS score, active exploitation or IOCs are reported.

Entenda a falha

A vulnerabilidade

CERT-FR advisory CERTFR-2026-AVI-1380 reports an unspecified security vulnerability in Mattermost Server. The vendor does not state the flaw type, the component, what an attacker needs or what they gain. No CVE or CVSS score is given. Affected: 11.7.x before 11.7.14, 11.10.x before 11.10.4 and 11.11.x before 11.11.3. Fixed in 11.7.14, 11.10.4 and 11.11.3.

Como funciona

The sources do not describe how the vulnerable process works. The advisory says only that an attacker can trigger an unspecified security problem, and it names no input, component or step where things go wrong.

Por que é vulnerável

The root cause is not disclosed. The vendor has not said whether it is a missing check, a logic error or something else, nor what the fix changes. Defenders should read Mattermost bulletin MMSA-2026-00759 for any further detail.

Como foi descoberta

The articles do not say who found the flaw or how. The advisory is based on Mattermost security bulletin MMSA-2026-00759 of 23 October 2026, and CERT-FR published its notice on 26 October 2026. No active exploitation is reported.

Explicação gerada por IA a partir da matéria e dos artigos, em 28/10/2026 14:21.

Detalhes técnicos

  • Affected: Mattermost Server 11.10.x before 11.10.4, 11.11.x before 11.11.3, and 11.7.x before 11.7.14.
  • The vulnerability type and impact are not specified by the vendor.

Remediação

  • Apply the fixes described in Mattermost bulletin MMSA-2026-00759, as CERT-FR directs.
  • Update to the fixed versions: 11.10.4, 11.11.3 or 11.7.14.

Linha do tempo

  1. cert.cyber.gouv.fr ↗ · pub. 25/10/2026 21:00 · coletado 28/10 14:01 primeiro registro

    CERT-FR: Unspecified vulnerability in Mattermost Server 11.7.x, 11.10.x and 11.11.x (CERTFR-2026-AVI-1380)

    ler a análise desta fonte

    CERT-FR published advisory CERTFR-2026-AVI-1380 on a vulnerability in Mattermost Server. The advisory says an attacker could trigger an unspecified security issue, and the vendor does not state the impact. It is based on Mattermost security bulletin MMSA-2026-00759 of 23 October 2026. No CVE identifier, CVSS score, active exploitation or IOCs are reported.

    Technical Details

    • Affected: Mattermost Server 11.10.x before 11.10.4, 11.11.x before 11.11.3, and 11.7.x before 11.7.14.
    • The vulnerability type and impact are not specified by the vendor.

    Remediation

    • Apply the fixes described in Mattermost bulletin MMSA-2026-00759, as CERT-FR directs.
    • Update to the fixed versions: 11.10.4, 11.11.3 or 11.7.14.