The vulnerability of the Mattermost instant messaging application, related to uncontrolled resource consumption, allows a hacker to cause a service failure.
🗓️ 01 Jun 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 9 Views
| Reporter | Title | Published | Views | Family All 16 |
|---|---|---|---|---|
 | CVE-2026-5755 | 22 May 202610:18 | – | attackerkb |
 | Mattermost 安全漏洞 | 22 May 202600:00 | – | cnnvd |
 | CVE-2026-5755 | 22 May 202610:18 | – | cve |
 | CVE-2026-5755 Denial of service via crafted TIFF file upload | 22 May 202610:18 | – | cvelist |
 | EUVD-2026-31427 | 22 May 202610:18 | – | euvd |
 | Mattermost doesn't validate the TIFF IFD offset in the image header before allocating memory | 26 May 202613:30 | – | github |
 | CVE-2026-5755 | 22 May 202611:16 | – | nvd |
 | GHSA-37J2-3VV8-CF24 Mattermost doesn't validate the TIFF IFD offset in the image header before allocating memory | 26 May 202613:30 | – | osv |
| GO-2026-5835 Mattermost doesn't validate the TIFF IFD offset in the image header before allocating memory in github.com/mattermost/mattermost-server | 7 Jul 202615:26 | – | osv |
| OPENSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb | 30 Jul 202609:09 | – | osv |
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| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
| vuldb | www.vuldb.com/vuln/365183 |
| web | www.web.nvd.nist.gov/view/vuln/detail |
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01 Jun 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 36.5
CVSS 26.8
EPSS0.00245