175 lines
6.7 KiB
JSON
175 lines
6.7 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-4054",
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"assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
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"state": "PUBLISHED",
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"assignerShortName": "Mattermost",
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"dateReserved": "2026-03-12T16:08:33.686Z",
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"datePublished": "2026-05-15T18:32:44.388Z",
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"dateUpdated": "2026-05-15T20:23:24.121Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"product": "Mattermost",
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"vendor": "Mattermost",
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"versions": [
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{
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"lessThanOrEqual": "11.5.1",
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"status": "affected",
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"version": "11.5.0",
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"versionType": "semver"
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},
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{
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"lessThanOrEqual": "10.11.13",
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"status": "affected",
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"version": "10.11.0",
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"versionType": "semver"
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},
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{
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"lessThanOrEqual": "11.4.3",
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"status": "affected",
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"version": "11.4.0",
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"versionType": "semver"
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},
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{
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"version": "11.6.0",
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"status": "unaffected"
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},
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{
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"version": "11.5.2",
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"status": "unaffected"
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},
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{
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"version": "10.11.14",
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"status": "unaffected"
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},
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{
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"version": "11.4.4",
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"status": "unaffected"
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}
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]
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "mk7120"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 Fail to validate the response body of proxied images, which allows a remote attacker to enact client-side DoS via an SVG file served from an attacker-controlled origin under a non-SVG Content-Type header (e.g. image/png) embedded in an og:image meta tag or Markdown image link.. Mattermost Advisory ID: MMSA-2026-00630"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "REQUIRED",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "LOW",
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"version": "3.1",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
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"baseSeverity": "MEDIUM",
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"baseScore": 4.3
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"description": "CWE-754: Improper Check for Unusual or Exceptional Conditions",
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"cweId": "CWE-754"
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}
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]
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}
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],
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"references": [
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{
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"url": "https://mattermost.com/security-updates",
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"name": "MMSA-2026-00630",
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"tags": [
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"vendor-advisory"
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]
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}
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],
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"solutions": [
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{
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"value": "Update Mattermost to versions 11.6.0, 11.5.2, 10.11.14, 11.4.4 or higher.",
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"lang": "en"
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}
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],
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"source": {
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"advisory": "MMSA-2026-00630",
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"defect": [
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"https://mattermost.atlassian.net/browse/MM-67871"
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],
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"discovery": "EXTERNAL"
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},
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"title": "SVG content served through Mattermost image proxy despite Content-Type restrictions causes client-side denial of service",
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"providerMetadata": {
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"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
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"shortName": "Mattermost",
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"dateUpdated": "2026-05-15T18:32:44.388Z"
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},
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-05-15T20:23:14.754503Z",
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"id": "CVE-2026-4054",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-05-15T20:23:24.121Z"
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}
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}
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]
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}
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} |