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CVE-2023-49607

Playbook plugin crash via missing interface type assertion

Medium4.3EPSS 0.65%
Published
Updated
Reserved
Assigned by
Mattermost

Description

Mattermost fails to validate the type of the "reminder" body request parameter allowing an attacker to crash the Playbook Plugin when updating the status dialog.

Timeline

  1. ID reserved

    By Mattermost

  2. · 7 days later

    Published

  3. · 8 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2023-49607, by who scored it
Scored byCVSSScoreVector
MattermostCNA (assigner)3.1Medium4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.65% · top 49% of all CVEs (7 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

Affected products

  • Mattermost · Mattermost

    • affected ≤ 8.1.5
    • affected ≤ 9.0.3
    • affected ≤ 9.1.2
    • affected ≤ 9.2.1
    • unaffected 9.2.2
    • unaffected 8.1.6
    • unaffected 9.0.4
    • unaffected 9.1.3

What to do

Solution: Update Mattermost Plugins to versions 9.2.2, 8.1.6, 9.0.4, 9.1.3 or higher.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .