6.5

CVE-2026-5755

Denial of service via crafted TIFF file upload

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.2, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate the TIFF IFD offset in the image header before allocating memory, which allows authenticated users with file upload or posting permissions to cause a denial of service (server OOM) via uploading a crafted TIFF file or posting a URL that serves one.. Mattermost Advisory ID: MMSA-2026-00648
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerMattermost
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Produkt Mattermost
Default Statusunaffected
Version <= 11.6.0
Version 11.6.0
Status affected
Version <= 11.5.2
Version 11.5.0
Status affected
Version <= 11.5.3
Version 11.5.0
Status affected
Version <= 11.4.4
Version 11.4.0
Status affected
Version <= 10.11.14
Version 10.11.0
Status affected
Version 11.7.0
Status unaffected
Version 11.6.1
Status unaffected
Version 11.5.3
Status unaffected
Version 11.5.4
Status unaffected
Version 11.4.5
Status unaffected
Version 10.11.15
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.154
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
9302f53e-dde5-4bf3-b2f2-a83f91ac0eee 6.5 0 0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
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