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CVE-2026-10819: Improper Handling of Highly Compressed Data (Data Amplification)

🗓️ 27 Jul 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 8 Views

Authenticated DoS in Mattermost via data amplification in animated GIF emoji uploads.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-10819
27 Jul 202614:15
–attackerkb
cve
CVE
CVE-2026-10819
27 Jul 202614:15
–cve
cvelist
Cvelist
CVE-2026-10819 Mattermost Server Denial of Service via Animated GIF Emoji Upload
27 Jul 202614:15
–cvelist
euvd
EUVD
EUVD-2026-49254
27 Jul 202614:15
–euvd
mend
Mend
CVE-2026-10819
27 Jul 202614:15
–mend
nvd
NVD
CVE-2026-10819
27 Jul 202615:16
–nvd
osv_mini
osv_mini
MINI-74RM-GFRH-957F
4 Aug 202613:56
–osv_mini
osv_mini
osv_mini
MINI-CG48-MCF3-CF32
4 Aug 202613:56
–osv_mini
ptsecurity
Positive Technologies
PT-2026-64921
27 Jul 202600:00
–ptsecurity
vulnrichment
Vulnrichment
CVE-2026-10819 Mattermost Server Denial of Service via Animated GIF Emoji Upload
27 Jul 202614:15
–vulnrichment

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03 Aug 2026 00:00Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.16.5
EPSS0.0042
SSVC
8