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Mattermost doesn't validate the response body of proxied images
| Reporter | Title | Published | Views | Family All 11 |
|---|---|---|---|---|
 | CVE-2026-4054 | 15 May 202618:32 | – | attackerkb |
 | Mattermost 代码问题漏洞 | 15 May 202600:00 | – | cnnvd |
 | CVE-2026-4054 | 15 May 202618:32 | – | cve |
 | CVE-2026-4054 SVG content served through Mattermost image proxy despite Content-Type restrictions causes client-side denial of service | 15 May 202618:32 | – | cvelist |
 | EUVD-2026-30590 | 15 May 202618:32 | – | euvd |
 | CVE-2026-4054 | 15 May 202619:17 | – | nvd |
 | GHSA-J76W-P754-G2W7 Mattermost doesn't validate the response body of proxied images | 15 May 202621:31 | – | osv |
 | PT-2026-41349 | 15 May 202600:00 | – | ptsecurity |
 | CVE-2026-4054 | 5 Jun 202619:28 | – | redhatcve |
 | Improper Check for Unusual or Exceptional Conditions | 15 May 202621:29 | – | snyk |
10
Node
OR
mattermostmattermost-serverRange0.0.0-20250731163400-5b955468ea1e–0.0.0-20260414103857-b21ef302025ego
ORData
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28 May 2026 19:28Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3 - 6.5
EPSS0.00242
SSVC