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CVE-2023-45847

Playbook Plugin Crash via Run Checklist

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

Description

Mattermost fails to to check the length when setting the title in a run checklist in Playbooks, allowing an attacker to send a specially crafted request and crash the Playbooks plugin

Scores

CVSS scores of CVE-2023-45847, 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)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
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 Server to versions 8.1.6, 9.0.4, 9.1.3, 9.2.2 or higher.

References (1)

Sources

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

Badge for a README or a ticket

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Record last updated .