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vuln-cve/data/2026/93xxx/CVE-2026-93850.json
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{
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"cveId": "CVE-2026-93850",
"assignerOrgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
"state": "PUBLISHED",
"assignerShortName": "Mattermost",
"dateReserved": "2026-09-18T18:41:27.257Z",
"datePublished": "2026-10-26T14:26:56.502Z",
"dateUpdated": "2026-10-26T16:46:45.587Z"
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"containers": {
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"product": "Mattermost",
"vendor": "Mattermost",
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"status": "affected",
"version": "11.9.0",
"versionType": "semver"
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"lessThanOrEqual": "11.8.5",
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"status": "unaffected"
}
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"credits": [
{
"lang": "en",
"type": "finder",
"value": "alimursaliyev"
}
],
"descriptions": [
{
"lang": "en",
"value": "Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to bind the volume of text extracted from an uploaded PDF which allows an authenticated user to exhaust server memory and cause a denial of service via a crafted PDF whose compressed content stream expands into a very large amount of text.. Mattermost Advisory ID: MMSA-2026-00769"
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"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH",
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"baseSeverity": "MEDIUM",
"baseScore": 6.5
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"lang": "en",
"type": "CWE",
"description": "CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)",
"cweId": "CWE-409"
}
]
}
],
"references": [
{
"url": "https://mattermost.com/security-updates",
"name": "MMSA-2026-00769",
"tags": [
"vendor-advisory"
]
}
],
"solutions": [
{
"value": "Update Mattermost to versions 11.11.0, 11.9.2, 11.8.6, 11.7.11, 11.10.2 or higher.",
"lang": "en"
}
],
"source": {
"advisory": "MMSA-2026-00769",
"defect": [
"https://mattermost.atlassian.net/browse/MM-70174"
],
"discovery": "EXTERNAL"
},
"title": "Unbounded memory consumption during PDF text extraction",
"providerMetadata": {
"orgId": "9302f53e-dde5-4bf3-b2f2-a83f91ac0eee",
"shortName": "Mattermost",
"dateUpdated": "2026-10-26T14:26:56.502Z"
},
"x_generator": {
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"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"id": "CVE-2026-93850",
"role": "CISA Coordinator",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-10-26T15:32:33.745429Z"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-10-26T16:46:45.587Z"
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]
}
}