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CVE-2026-4054 SVG content served through Mattermost image proxy despite Content-Type restrictions causes client-side denial of service
| 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 |
 | EUVD-2026-30590 | 15 May 202618:32 | – | euvd |
 | Mattermost doesn't validate the response body of proxied images | 15 May 202621:31 | – | github |
 | 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
[
{
"defaultStatus": "unaffected",
"product": "Mattermost",
"vendor": "Mattermost",
"versions": [
{
"lessThanOrEqual": "11.5.1",
"status": "affected",
"version": "11.5.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "10.11.13",
"status": "affected",
"version": "10.11.0",
"versionType": "semver"
},
{
"lessThanOrEqual": "11.4.3",
"status": "affected",
"version": "11.4.0",
"versionType": "semver"
},
{
"version": "11.6.0",
"status": "unaffected"
},
{
"version": "11.5.2",
"status": "unaffected"
},
{
"version": "10.11.14",
"status": "unaffected"
},
{
"version": "11.4.4",
"status": "unaffected"
}
]
}
]| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
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15 May 2026 18:32Current
CVSS 3.14.3
EPSS0.00097