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Vulnerability record/PUBLISHED/Published Aug 1, 2024 14:05:00 UTC

CVE-2024-29977

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly validate synced reactions, when shared channels are enabled, which allows a malicious remote to create arbitrary reactions on arbitrary posts

Base score2.7/ 10
SeverityLowCVSS 3.1

Exploitability / impact

CVSS metric breakdown

Vector-derived attributes
Base severityLow
Attack vectorNetworkAV
Attack complexityLowAC
Privileges requiredHighPR
User interactionNoneUI
ScopeUnchangedS
Confidentiality impactNoneC
Integrity impactLowI
Availability impactNoneA
CVSS vector stringCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.

Record context

CVE Numbering AuthorityMattermost
Last updatedAug 1, 2024 14:35:07 UTC
PublishedAug 1, 2024 14:05:00 UTC
ReservedJul 23, 2024 19:00:08 UTC

Credits

  • Juho Forsén